I'm That Monster Girl You Once Helped Out

I'm That Monster Girl You Once Helped Out: A Middle-Aged Teacher Finds Unexpected Popularity in Another World
First tankōbon volume cover
「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する
("Ano Toki Tasukete Itadaita Monsutā Musume Desu." Isekai Ossan Kyōshi Totsuzen no Moteki ni Konwaku Suru)
Genre
Manga
Written byOkinosuke
Published by
English publisher
MagazineGanma!
Original runSeptember 28, 2023 – present
Volumes4

I'm That Monster Girl You Once Helped Out: A Middle-Aged Teacher Finds Unexpected Popularity in Another World (「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する, "Ano Toki Tasukete Itadaita Monsutā Musume Desu." Isekai Ossan Kyōshi Totsuzen no Moteki ni Konwaku Suru) is a Japanese manga series written and illustrated by Okinosuke. It began serialization on Comic Smart's Ganma! manga website in September 2023.

Synopsis

Twenty years ago, Washio was summoned to another world to become a hero. However, Washio found the role to be ill-fitting, and later decided to become a teacher. In the current day, Washio still works as a teacher, but gets no respect from his students or his fellow teachers, until one day, a busty girl with tentacles named Claudia comes in and reminds Washio that he saved her some time ago when she was younger.

Publication

Written and illustrated by Okinosuke, I'm That Monster Girl You Once Helped Out: A Middle-Aged Teacher Finds Unexpected Popularity in Another World began serialization on Comic Smart's Ganma! manga website on September 28, 2023.[2] Ichijinsha has compiled its chapters into four tankōbon volumes as of June 2026.[3]

During their panel at Anime NYC 2025, Mangamo announced that they had licensed the series for English digital publication.[4] In June 2026, Yen Press announced that they had licensed the series, under the title I'm the Monster Girl You Once Saved: A Middle-Aged Teacher in Another World Is Concerned About His Sudden Popularity, for English publication, with the first volume set to release in December 2026.[5]

No. Original release date Original ISBN English release date English ISBN
1January 24, 2025[6]978-4-7580-2842-4December 15, 2026[7]979-8-8554-4293-9
2July 10, 2025[8]978-4-7580-2928-5——
3January 15, 2026[9]978-4-7580-8914-2——
4June 25, 2026[3]978-4-7580-9950-9——

Reception

The series was nominated for the eleventh Next Manga Awards in 2025 in the web category.[10]

References

  1. 1 2 タコが美しい“モンスター娘”になって帰ってきた！中年教師のモテ期描くラブコメ. Comic Natalie (in Japanese). Natasha, Inc. January 24, 2025. Retrieved September 11, 2025.
  2. ↑ 沖ノ輔『「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する』がGANMA!で新連載. Komi Rock (in Japanese). September 16, 2023. Retrieved September 11, 2025.
  3. 1 2 「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する(4) (in Japanese). Ichijinsha. Retrieved May 20, 2026.
  4. ↑ Mateo, Alex (August 22, 2025). "Mangamo Licenses My Gyaru Wife's Secrets, 12cm Promise with a Cool Girl, Damedol and the Only Fan in the World, 2 More Manga". Anime News Network. Retrieved September 11, 2025.
  5. ↑ Mateo, Alex (June 12, 2026). "Yen Press Licenses Witches Can't Be Collared, 'Alma-chan Wants to Be a Family!', Yamada's Class Diary, More Manga/Novels". Anime News Network. Retrieved June 13, 2026.
  6. ↑ 「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する(1) (in Japanese). Ichijinsha. Retrieved September 11, 2025.
  7. ↑ "I'm the Monster Girl You Once Saved: A Middle-Aged Teacher in Another World Is Concerned About His Sudden Popularity, Vol. 1". Yen Press. Retrieved June 19, 2026.
  8. ↑ 「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する(2) (in Japanese). Ichijinsha. Retrieved September 11, 2025.
  9. ↑ 「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する(3) (in Japanese). Ichijinsha. Retrieved December 19, 2025.
  10. ↑ 「次にくるマンガ大賞2025」ノミネート100作品発表 『魔男のイチ』『大人大戦』『もちづきさん』など【全作品一覧】. Oricon (in Japanese). June 20, 2025. Retrieved September 11, 2025.

Further reading

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