Shinobi Undercover

Shinobi Undercover
First tankōbon volume cover
しのびごと
(Shinobigoto)
Genre
Manga
Written byIppon Takegushi
Illustrated bySanta Mitarashi
Published byShueisha
English publisher
ImprintJump Comics
MagazineWeekly Shōnen Jump
Original runSeptember 17, 2024 – present
Volumes5

Shinobi Undercover (Japanese: しのびごと, Hepburn: Shinobigoto) is a Japanese manga series written by Ippon Takegushi and illustrated by Santa Mitarashi. It began serialization in Shueisha's Weekly Shōnen Jump magazine in September 2024, with its chapters collected in five volumes as of November 2025.

Plot

Yodaka is an extremely skilled shinobi who suffers from severe social anxiety. He is assigned to protect clumsy high school student, Aoi Mukai, who is being targeted by fugitive shinobi.

Yodaka must work to protect Aoi and overcome his poor social skills in order to give her the best high school student life.

Characters

Ninja Public Security Force
Codename[a][b] Alias No.[c] Kekkai[d]
⊕Yodaka (ヨダカ)
Night Jar 		Yu Nozuki 9 N/a[e]
Hibari (ヒバリ)
Skylark 		Kana Fujimiya 9 ?[f]
Umineko (ウミネコ)
Gull 		Taki Utsumi 9 N/a[g]
Suzume (スズメ)[h]
Sparrow 		Makoto Yuki 9 "Flexiform" painlessly dislocates joints and enhances elasticity
Mimizuku (ミミズク)
Horned owl 		Usami[i] N/a[j] ?[k]
Kogera (コゲラ)
Pygmy woodpecker 		? 18 ?
Hiyo (ひよ)
Chick 		? 18 ?
⊕Inuwashi (イヌワシ)
Golden eagle 		? 2 ?
⊕Hayabusa (ハヤブサ)
Peregrine falcon 		Hayami 6 "Generator" applies an electric shock to physical strikes
Mukudori (ムクドリ)[l]
Starling 		? 6 "Oilfire" produces flammable oil
Shime (シメ)
Hawfinch 		? 6 (enlongated tongue)
Enaga (エナガ)
Long-tailed tit 		? 6 blasting inhaled air
⊕Kasasagi (カササギ)
European magpie 		? 7 sticky bubbles
Buncho (ブンチョウ)
Java sparrow 		? 7 "Steel scales" armored skin
Mugimaki (ムギマキ)
Flycatcher 		? 7 ?
Atori (アトリ)
Brambling 		? 7 ?
Fugitive Ninja
Codename[a] Kekkai[d]
Tsubame (ツバメ)[m]
Swallow[n] 		N/a
Hachikuma (ハチクマ)
Crested honey buzzard 		N/a
Tobi (トビ)
Kite 		enhanced hearing
Ban (バン)
Moorhen 		"Toxiflesh" imbues sweat and blood with poison
Kawasemi (カワセミ)[o]
Kingfisher 		gains super strength; flesh turns red
Konoha (コノハ)[p]
Scops owl 		"Amalgaliquid" controls any liquid mixed with his blood
Ikaru (イカル)
Grosbeak 		"Dancing Hair" hair manipulation
Hojiro (ホオジロ)
Bunting 		enhanced healing rate; gains strength from injuries
Mozu (モズ)
Shrike 		"Stone Skin" hardens skin surface
Karasu (カラス)[q]
Crow 		"Vibrotex" manipulates vibrations
Notes
  1. ^ a b Each code name is derived from a different species of bird.
  2. ^ Each squad's ace is marked by the symbol ⊕.
  3. ^ NPSF squad number; squads with lower numbers are judged to have better abilities, with single-digit squads being especially elite.
  4. ^ a b Kekkai (血界, chi-kai) is a hereditary ability that grants the user superhuman powers; regardless of lineage, a user must awaken their kekkai to use it.
  5. ^ Yodaka does not come from a ninja family, so he does not possess kekkai.[ch. 19]
  6. ^ Hibari comes from a family of fugitive ninja.[ch. 35]
  7. ^ Umineko specifically is described as the "family failure" for being born without kekkai.[ch. 35]
  8. ^ Suzume was disinherited by her family.[ch. 35]
  9. ^ Serves as Aoi's driver and guardian as part of his duties as the custodian of Amamori.
  10. ^ Formerly a member of Squad No. 1.[ch. 29]
  11. ^ Mimizuku states his kekkai is not suited for offense, so his family have been passing down the "Six Arts of Capture" to counter kekkai users,[ch. 41] which are:[ch. 50]
    1. Cup Piercer
    2. Unwavering Moon
    3. Engraving of the Deer Crest
    4. Frog Seamstress
    5. Phoenix Maelstrom
    6. Boar-Hearted Charge
  12. ^ Umineko's older sister;[ch. 32] they belong to the Kamuro family.[ch. 39]
  13. ^ Alias "Miyake", a bullied first-year student in the Soccer Club.[ch. 4]
  14. ^ Mistranslated as "sparrow".[ch. 8]
  15. ^ Claims to be Aoi's big brother,[ch. 26] but she has no known living relatives.[ch. 27]
  16. ^ Hibari calls him a "lousy excuse of a brother".[ch. 46]
  17. ^ Former ace of Squad No. 1 prior to becoming a fugitive.[ch. 55]

Publication

Written by Ippon Takegushi and illustrated by Santa Mitarashi, the series began serialization in Shueisha's Weekly Shōnen Jump magazine on September 17, 2024.[2] As of November 2025, the series' individual chapters have been collected into five tankōbon volumes.[3]

Viz Media and Manga Plus are publishing the series in English simultaneously with its Japanese release.[4]

Three animated manga shorts were posted on the Weekly Shōnen Jump YouTube channel in December 2024.[5]

Volumes

No. Japanese release date Japanese ISBN
1 January 4, 2025[6]978-4-08-884401-5
  1. "A Ninja's Work" (忍者の仕事, Ninja no Shigoto)
  2. "Yodaka's Work" (ヨダカの仕事, Yodaka no Shigoto)
  3. "Teamwork" (チームプレー, Chīmupurē)
  4. "The Joy of Clubs" (部活の醍醐味, Bukatsu no Daigomi)
  1. "Hibari's Struggle" (ヒバリの悩み, Hibari no Nayami)
  2. "Hibari's Location" (ヒバリのいる場所, Hibari no iru Basho)
  3. "As a Ninja" (忍者として, Ninja to Shite)
The state-sanctioned Ninja Public Security Force (NPSF) are a clandestine group which remove threats to the nation's peace. One young elite shinobi with the codename Yodaka (ヨダカ), who has crippling social anxiety, is assigned to be the bodyguard of physically clumsy high school student Aoi Mukai, under the assumed identity of a fellow first-year student, alias Yu Nozuki; he stays in constant contact with NPSF Operator No. 9 through a bird-shaped earpiece. By returning a charm she dropped while exiting her limousine, he is the first to spark a friendship with Aoi, despite the presence of two NPSF ninja assigned to become Aoi's best friend: alias Kana Fujimiya, codename Hibari (ヒバリ); and Aoi's future boyfriend: alias Taki Utsumi, codename Umineko (ウミネコ). Over the course of the first few days, Aoi defends Yodaka from bullies and he foils several assassination attempts, including one that takes place before the entrance ceremony, another during after-school karaoke, and yet another carried out by Miyake, a renegade ninja who they saved from bullies in the soccer club, with help from Hibari.
2 March 4, 2025[7]978-4-08-884414-5
  1. "The Two After School" (放課後の2人, Hōkago no 2-Ri)
  2. "Umineko's Shopping" (ウミネコのショッピング, Umineko no shoppingu)
  3. "What the Two Look Forward To" (2人の楽しみ, 2-Ri no Tanoshimi)
  4. "Tangling Threads!" (絡む糸!, Karamu Ito!)
  1. "Mimizuku's Mission" (ミミズクの任務, Mimizuku no Ninmu)
  2. "Make More Friends" (友達増やせ, Tomodachi Fuyase)
  3. "Mission at School Camp" (林間学校の任務, Rinkan Gakkō no Ninmu)
  4. "The Ninja Ghost" (忍者のお化け, Ninja no Obake)
  5. "A Ninja's Sign" (忍者の印, Ninja no Shirushi)
As Hibari recuperates, they learn more about Miyake's background. Yodaka's relationship with Aoi solidifies into friendship. For the upcoming sports festival, Umineko is paired with Aoi for a mixed-gender three-legged race; to prepare, Umineko and Aoi go shopping for decorations at a mall with Yodaka trailing them discreetly. Renegade ninja Hachikuma (ハチクマ) attacks Aoi, but Yodaka and Umineko fend him off, with Umineko breaking his leg, forcing Yodaka into the three-legged race. In a flashback, Usami (another NPSF member, aka Mimizuku, serving as Aoi's driver and guardian) explains they have a new direction from NPSF to allow Aoi to participate in typical high school events, hoping to draw out the renegades. After Aoi decides to expand their friend group, Umineko and Hibari take advantage, causing Yodaka needlessly to worry about being replaced; Operator No. 9 suggests that he should fill the boyfriend role instead. On a school camping trip, Yodaka and Aoi are attacked by Tobi during a haunted walk event; once Hibari and Umineko take over protecting Aoi, Yodaka handily defeats Tobi.
3 June 4, 2025[8]978-4-08-884556-2
  1. "The Day the Bone Broke" (骨の折れた日, Hone no Oreta hi)
  2. "Precious Little Birdies" (可愛い小鳥, Kawaii Kotori)
  3. "Suzume's Feelings" (スズメの気持ち, Suzume no Kimochi)
  4. "Going Home in the Rain" (雨の帰り道, Ame no Kaerimichi)
  1. "Squad No. 9" (9号部隊, 9 Gō Butai)
  2. "A Boss from Hell" (般若の上司, Han'nya no jōshi)
  3. "Lost Contact" (通信不能, Tsūshin Funō)
  4. "Red Kawasemi" (赤いカワセミ, Akai Kawasemi)
  5. "Looks Great on You" (あなたにお似合い, Anata ni Oniai)
Yodaka is confused by his growing feelings for Aoi. Class 2 has another undercover NPSF agent, codename Suzume, who proposes to take over as a super-handsome love interest; after sparring, Yodaka renews his determination to succeed. Walking home together in the rain, Yodaka retrieves Aoi's class identification card and learns her birthday is in three days, giving him a new personal mission. Hachikuma says the secretive organization used a large coastal warehouse, and the team infiltrate the premises to learn more information, where they are confronted by two renegades, codename Ban, wearing an oni mask, and codename Kawasemi, wielding an axe. Kawasemi threatens the other members of Squad No. 9 in an attempt to get Yodaka to join, but Yodaka repeats the instructions he was given: each NPSF member should handle their own situation. After Hibari defeats Ban, they team up to beat Kawasemi.
4 September 4, 2025[9]978-4-08-884655-2
  1. "That's All!" (それだけ!, Sore Dake!)
  2. "Aoi's Birthday" (アオイは誕生日, Aoi wa Tanjōbi)
  3. "Special Dinner Table" (特別な食卓, Tokubetsuna Shokutaku)
  4. "Invaders of Amamori" (天守の侵入者, Tenshu no Shin'nyū-sha)
  1. "Please Teach Me" (教えてください, Oshietekudasai)
  2. "Kinda at the Beach" (なんか海, Nanka Umi)
  3. "Squad No. 6" (6号部隊, 6 Gō Butai)
  4. "The Croquettes Are Good" (コロッケうまい, Korokke Umai)
  5. "On Guard" (油断禁物, Shinobu Yudan Kinmotsu)
Although Kawasemi escapes, the squad retrieves records leading to more fugitive ninja. Yodaka's first choice present is rejected by Hibari and he gives Aoi a backup instead; Mimizuku invites him to dinner at the Amamori apartments to celebrate her birthday. Afterward, Mimizuku tells Yodaka NPSF is considering replacing Squad No. 9 as Aoi's bodyguards because his feelings have become distracting, but Mimizuku makes plans to train Yodaka. To start, Mimizuku instructs Yodaka to defeat intruders without spilling a glass of tea. When end of term grades come out, Aoi avoids going to remedial classes with tutoring by Squad 9, and Mimizuku suggests a trip to the beach, where he reflects on the parallels between Aoi's father, a ninja assigned to guard Aoi's mother, and Yodaka. There, they meet and compete with Squad No. 6, who NPSF have advanced as candidates to take over from Squad 9, in a ninja battle royale with other squads.
5 November 4, 2025[3]978-4-08-884743-6
  1. "Battle of the Ninja Arts" (忍法勝負, Ninpō Shōbu)
  2. "Hayabusa's Kekkai" (ハヤブサの血界, Hayabusa no Chi-kai)
  3. "Three Against Two" (3対2, 3 Tai 2)
  4. "Buying Time" (時間を稼げ, Jikan o Kasege)
  1. "A Good Ninja" (いい忍者, Ī Ninja)
  2. "Priority Order" (優先順位, Yūsen Jun'i)
  3. "Natural Gift" (天才, Tensai)
  4. "Big Sister, Little Brother" (姉と弟, Ane to Otōto)
  5. "I Want to Join You" (隣に行きたい, Tonari ni Ikitai)
In the battle royale between eight squads, each ninja carries a wooden tag representing their life; if it is broken, that individual is out of the exercise. In addition, each squad is assigned a wooden tag with red markings which disqualifies all members when broken; the squad breaking the red tag receives a point. Squads 6 and 9 establish themselves as the early favorites, each eliminating three squads; when they clash, Yodaka delays Squad 6 and eliminates Shime. Hayabusa sends Mukudori (Umineko's older sister) and Enaga to take Squad 9's red tag, which they assume (wrongly) is held by Suzume, who breaks Enaga's individual tag. Mimizuku had advised Squad 9 to run, buying enough time for Yodaka to defeat Hayabusa, who is carrying the Squad 6 red tag; while the aces fight, Mukudori eliminates Hibari and Suzume. Yodaka has learned a new skill from Mimizuku: he metaphorically sets aside his feelings to maintain focus and priority. Yodaka prevails, breaking the Squad 6 red tag, and Umineko finally stands up to his older sister, but Hayabusa unlocks a new fear for Yodaka, telling him to invite Aoi to a summer festival which will start in two days.
6 January 5, 2026[10]978-4-08-884813-6

Chapters not yet collected

The following chapters have not yet been collected into tankobon format:

  1. "Summer Isn't Over Yet" (夏は終わらない, Natsu wa owaranai)
  2. "The Tower of Anxiety" (不安の塔, Fuan no Tō)
  3. "Attack" (急襲, Kyūshū)
  4. "The Toppling Tower" (崩れる塔, Kuzureru Tō)
  5. "Punch" (殴る, Naguru)
  6. "Yodaka, All Alone" (独りのヨダカ, Hitori no Yodaka)
  7. "Mimizuku's Roost" (ミミズクの巣, Mimizuku no Su)
  8. "Useless Struggle" (悪あがき, Waruagaki)
  9. "A Watched Back" (見る背中, Miru Senaka)
  10. "Awakened Blood" (目覚める血, Mezameru Chi)
  11. "The Nothing Ninja" (空っぽの忍者, Karappo no Ninja)
  12. "Blackbird" (黒い鳥, Kuroi Tori)
  13. "The End of Summer" (夏の終わり, Natsu no Owari)
  14. "Amamori's Underground Training Facility" (天守地下訓練場, Tenshu Chika Kunren-ba)
  15. "A Marriage Negotiation?" (お見合い?, Omiai?)
  16. "Where Yodaka Belongs" (ヨダカの居場所, Yodaka no Ibasho)
  17. "Squad No. 7" (7号部隊, 7 Gōbutai)
  18. "Kasasagi's Mission" (カササギの任務, Kasasagi no Ninmu)
  19. "Start of Mission" (任務開始, Ninmu Kaishi)
  20. "Arrival" (到着, Tōchaku)

Reception

The series has been recommended by manga creators Shūichi Asō and Yūto Tsukuda.[11][12] It was nominated for the 11th Next Manga Award in the print category in 2025, and was ranked eighth.[13][14]

J.R. Waugh of Screen Rant described the manga as "an authentic yet modern twist on ninja-themed manga" and recommended it to fans of Naruto.[1]

See also

References

  1. ^ a b c Waugh, J.R. (September 17, 2024). "Shonen Jump's New Ninja Manga Is the Modern Naruto Fans Were Waiting For". Screen Rant. Retrieved July 25, 2025.
  2. ^ 少女を秘密裏に護衛せよ、「アメノフル」コンビが描く忍者譚がジャンプで. Comic Natalie (in Japanese). Natasha, Inc. September 17, 2024. Retrieved July 25, 2025.
  3. ^ a b しのびごと 5 (in Japanese). Shueisha. Retrieved September 17, 2025.
  4. ^ Lada, Jenni (September 16, 2024). "Shinobi Undercover Manga Debuts in Shonen Jump". Siliconera. Retrieved July 25, 2025.
  5. ^ Williams, Anna (December 8, 2024). "Shonen Jump's Shinobi Undercover Gets Animated Manga: Watch". ComicBook.com. Retrieved July 25, 2025.
  6. ^ しのびごと 1 (in Japanese). Shueisha. Retrieved July 25, 2025.
  7. ^ しのびごと 2 (in Japanese). Shueisha. Retrieved July 25, 2025.
  8. ^ しのびごと 3 (in Japanese). Shueisha. Retrieved July 25, 2025.
  9. ^ しのびごと 4 (in Japanese). Shueisha. Retrieved July 25, 2025.
  10. ^ しのびごと 6 (in Japanese). Shueisha. Retrieved November 20, 2025.
  11. ^ 麻生周一も推薦　忍者たちが女子高生を秘密裏に護衛する「しのびごと」1巻. Comic Natalie (in Japanese). Natasha, Inc. January 4, 2025. Retrieved July 25, 2025.
  12. ^ Shinobi Undercover [@shinobigoto_off] (March 4, 2025). #しのびごと コミックス🥷 第2巻本日発売です!! (Tweet) (in Japanese). Retrieved July 25, 2025 – via Twitter.
  13. ^ "Next Manga Award 2025 Reveals 100 Nominees: Full List Including War of the Adults". Japan Anime News. Oricon. June 19, 2025. Retrieved July 25, 2025.
  14. ^ 「次にくるマンガ大賞 2025」1位に「魔男のイチ」「サンキューピッチ」. Comic Natalie (in Japanese). Natasha, Inc. September 18, 2025. Retrieved September 18, 2025.
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