Yamaguchi-kun Isn't So Bad

Yamaguchi-kun Isn't So Bad
First tankōbon volume cover
山口くんはワルくない
(Yamaguchi-kun wa Warukunai)
GenreRomance[1]
Manga
Written byYuu Saiki
Published byKodansha
English publisher
ImprintKodansha Comics Betsufure
MagazineBessatsu Friend
Original runSeptember 13, 2019 – present
Volumes12
Live-action film
Directed byKentarō Moriya
StudioAsmik Ace
ReleasedJune 5, 2026 (2026-06-05)

Yamaguchi-kun Isn't So Bad (Japanese: 山口くんはワルくない, Hepburn: Yamaguchi-kun wa Warukunai) is a Japanese manga series written and illustrated by Yuu Saiki. It has been serialized in Kodansha's shōjo manga magazine Bessatsu Friend since September 2019. A live-action film adaptation is set to premiere in Japanese theaters in June 2026.

Characters

Asuka Yamaguchi (山口飛鳥, Yamaguchi Asuka)
Portrayed by: Kyohei Takahashi (Naniwa Danshi)[2]
Satsuki Shinohara (Shinohara Satsuki)
Portrayed by: Hikaru Takahashi[3]
Rion Ishizaki (Ishizaki Rion)
Portrayed by: Yо̄ji Iwase[3]

Media

Manga

Written and illustrated by Yuu Saiki, Yamaguchi-kun Isn't So Bad started in Kodansha's shōjo manga magazine Bessatsu Friend on September 13, 2019.[4] The manga went on hiatus in June 2022 due to Saiki's childbirth,[5] and resumed on July 13, 2023.[6] Kodansha has collected its chapters into individual tankōbon volumes. The first volume was released on January 10, 2020.[7] As of December 12, 2025, twelve volumes have been released.[8]

In July 2021, Kodansha USA announced that they have licensed the manga for English digital release in North America.[9]

Volumes

No. Original release date Original ISBN English release date English ISBN
1January 10, 2020[10]978-4-06-518241-3August 10, 2021[11]978-1-63699-291-4
  1. "See Ya Tomorrow"
  2. "You Are Too Funny"
  3. "That Took You By Surprise, Didn't It?"
  4. "It Drives Me Nuts!"
2June 11, 2020[12]978-4-06-519934-3September 14, 2021[13]978-1-63699-356-0
  1. "You're Right"
  2. "What Should I Do?"
  3. "Are You Listening?"
  4. "No, It's Not That"
3October 13, 2020[14]978-4-06-520981-3October 12, 2021[15]978-1-63699-408-6
  1. "Me Too"
  2. "It Wasn't Sudden"
  3. "Something Like That"
  4. "To Be Honest"
4March 12, 2021[16]978-4-06-522481-6November 9, 2021[17]978-1-63858-260-1
  1. "I Can't Take It Anymore"
  2. "I've Been Thinking About It"
  3. "Oh My Gosh"
  4. "That's Not What I Meant"
5August 12, 2021[18]978-4-06-524289-6December 14, 2021[19]978-1-63858-668-5
  1. "It's Hard, You Know"
  2. "You're Acting Weird Today"
  3. "Say Something"
  4. "Stop"
6January 13, 2022[20]978-4-06-526438-6June 13, 2022[21]978-1-63858-903-7
  1. "It's Just A Coincidence, Isn't It?"
  2. "That's Enough!!"
  3. "I'm Not Mad"
  4. "You're Sure Anything Is Okay?"
7June 13, 2022[22]978-4-06-528023-2December 13, 2022[23]979-8-88843-113-9
  1. "You Never Know What I'm Gonna Do"
  2. "That's More Embarrassing"
  3. "You Should Let It Show"
  4. "I Can't Concentrate"
8November 13, 2023[24]978-4-06-533670-0April 30, 2024[25]979-8-88933-451-4
  1. "I Can't Keep My Anger Under Control"
  2. "You're So Cool"
  3. "I Can't Help Smiling..."
  4. "Nobody's Looking At Us"
9July 11, 2024[26]978-4-06-536187-0December 17, 2024[27]979-8-89478-304-8
  1. "Let Me Explain"
  2. "Do You Wanna Do It?"
  3. "Absolutely Not"
  4. "Be Ready For It!"
  • Special Short Episode: Let's Make This A Great New Year Together
10December 13, 2024[28]978-4-06-537800-7May 20, 2025[29]979-8-89478-524-0
11June 13, 2025[30]978-4-06-539886-9October 21, 2025[31]979-8-89478-730-5
12December 12, 2025[8]978-4-06-541720-1——

Live-action film

A live-action film adaptation was announced on December 6, 2025. It will be produced by Asmik Ace and directed by Saiji Yakumo. Asmik Ace will distribute the film and is set to premiere in Japanese theaters on June 5, 2026.[2]

Reception

The series was among the top five manga in the women's category of Comic C'moa's Electronic Comic Awards 2022.[32]

References

  1. ^ Yamaguchi-kun Isn't So Bad. Kodansha USA. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  2. ^ a b Hodgkins, Crystalyn (December 5, 2025). "Yamaguchi-kun Isn't So Bad Manga Gets Live-Action Film on June 5". Anime News Network. Archived from the original on December 6, 2025. Retrieved December 6, 2025.
  3. ^ a b Mateo, Alex (February 11, 2026). "Live-Action Yamaguchi-kun Isn't So Bad Film Reveals 2 Cast Members". Anime News Network. Archived from the original on February 12, 2026. Retrieved February 12, 2026.
  4. ^ コワモテ関西弁男子×真面目女子の青春ストーリー「山口くんはワルくない」別フレで. Comic Natalie (in Japanese). Natasha, Inc. September 13, 2019. Archived from the original on June 13, 2023. Retrieved June 23, 2023.
  5. ^ Hodgkins, Crystalyn (June 12, 2022). "Yamaguchi-kun Isn't So Bad Manga Goes on Hiatus for Author's Childbirth". Anime News Network. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  6. ^ Pineda, Rafael (June 15, 2022). "Yamaguchi-kun Isn't So Bad Manga Returns After 13-Month Hiatus". Anime News Network. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  7. ^ コワモテヤンキーくんがまさかの優等生？青春ラブコメ「山口くんはワルくない」1巻. Comic Natalie (in Japanese). Natasha, Inc. January 10, 2020. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  8. ^ a b 【12月12日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. December 12, 2025. Retrieved December 11, 2025.{{cite web}}: CS1 maint: deprecated archival service (link)
  9. ^ Mateo, Alex (July 29, 2021). "Kodansha Comics Licenses The Decagon House Murders, Yamaguchi-kun Isn't So Bad, Chihiro-kun Only Has Eyes For Me, More Manga". Anime News Network. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  10. ^ 【1月10日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. January 10, 2020. Archived from the original on October 29, 2021. Retrieved June 23, 2023.
  11. ^ Mateo, Alex (August 10, 2021). "North American Anime, Manga Releases, August 8–14". Anime News Network. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  12. ^ 【6月11日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. June 11, 2020. Archived from the original on October 28, 2021. Retrieved June 23, 2023.
  13. ^ Mateo, Alex (September 14, 2021). "North American Anime, Manga Releases, September 12–18". Anime News Network. Archived from the original on January 8, 2022. Retrieved June 23, 2023.
  14. ^ 【10月13日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. October 13, 2020. Archived from the original on November 19, 2021. Retrieved June 23, 2023.
  15. ^ Mateo, Alex (October 12, 2021). "North American Anime, Manga Releases, October 10–16". Anime News Network. Archived from the original on January 4, 2022. Retrieved June 23, 2023.
  16. ^ 【3月12日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. March 12, 2021. Archived from the original on May 21, 2022. Retrieved June 23, 2023.
  17. ^ Mateo, Alex (November 9, 2021). "North American Anime, Manga Releases, November 7–13". Anime News Network. Archived from the original on December 6, 2021. Retrieved June 23, 2023.
  18. ^ 【8月12日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. August 12, 2021. Archived from the original on June 23, 2023. Retrieved June 23, 2023.
  19. ^ Mateo, Alex (December 14, 2021). "North American Anime, Manga Releases, December 12–18". Anime News Network. Archived from the original on December 16, 2021. Retrieved June 23, 2023.
  20. ^ 【1月13日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. January 13, 2022. Archived from the original on March 8, 2023. Retrieved June 23, 2023.
  21. ^ Mateo, Alex (June 15, 2022). "North American Anime, Manga Releases, June 12–18". Anime News Network. Archived from the original on July 14, 2022. Retrieved June 23, 2023.
  22. ^ 【6月13日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. June 13, 2022. Archived from the original on November 16, 2022. Retrieved June 23, 2023.
  23. ^ Mateo, Alex (December 15, 2022). "North American Anime, Manga Releases, December 11–17". Anime News Network. Archived from the original on January 20, 2023. Retrieved June 23, 2023.
  24. ^ 【11月13日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. November 13, 2023. Archived from the original on February 18, 2024. Retrieved February 18, 2024.
  25. ^ Mateo, Alex (May 1, 2024). "North American Anime, Manga Releases, April 28–May 4". Anime News Network. Archived from the original on May 2, 2024. Retrieved June 14, 2024.
  26. ^ 【7月11日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. July 11, 2024. Archived from the original on July 16, 2024. Retrieved July 21, 2024.
  27. ^ Mateo, Alex (December 20, 2024). "North American Anime, Manga Releases, December 15–21". Anime News Network. Archived from the original on December 30, 2024. Retrieved February 5, 2025.
  28. ^ 【12月13日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. December 13, 2024. Archived from the original on December 17, 2024. Retrieved February 5, 2025.
  29. ^ Mateo, Alex (May 22, 2025). "North American Anime, Manga Releases, May 18–24". Anime News Network. Archived from the original on September 23, 2025. Retrieved October 14, 2025.
  30. ^ 【6月13日付】本日発売の単行本リスト. Comic Natalie (in Japanese). Natasha, Inc. June 13, 2025. Retrieved June 12, 2025.{{cite web}}: CS1 maint: deprecated archival service (link)
  31. ^ Mateo, Alex (October 24, 2025). "North American Anime, Manga Releases, October 19–25". Anime News Network. Archived from the original on January 1, 2026. Retrieved January 10, 2026.
  32. ^ すでに100万票越え、電子コミック大賞の中間発表で6部門上位5作品が明らかに. Comic Natalie (in Japanese). Natasha, Inc. November 2, 2021. Archived from the original on November 5, 2021. Retrieved June 23, 2023.
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