The Long Summer of August 31st

The Long Summer of August 31st
First tankōbon volume cover
８月３１日のロングサマー
(Hachigatsu Sanjuuichi no Rongusamā)
Genre
Manga
Written byIkkado Ito
Published byKodansha
English publisher
ImprintMorning KC
MagazineMorning
Original runMarch 30, 2023 – present
Volumes11

The Long Summer of August 31st (８月３１日のロングサマー, Hachigatsu Sanjuuichi no Rongusamā) is a Japanese manga series written and illustrated by Ikkado Ito. It began serialization in Kodansha's seinen manga magazine Morning in March 2023.

Synopsis

Takaya Suzuki and Kana Takagi are high schoolers who have been caught in an unending time loop centered around the date August 31st for a month. Suzuki begins to suggest that a possible reason for this could be linked to Suzuki's desire to get a girlfriend and lose his virginity.

Publication

Written and illustrated by Ikkado Ito, The Long Summer of August 31st began serialization in Kodansha's seinen manga magazine Morning on March 30, 2023.[3] Its chapters have been compiled into eleven tankōbon volumes as of February 2026.[4]

The series is published in English on Kodansha's K Manga app.[5] The series is also licensed for English publication by Seven Seas Entertainment.[6]

No. Original release date Original ISBN North American release date North American ISBN
1August 23, 2023[7]978-4-06-532668-8April 1, 2025[8]979-8-89373-174-3
  1. "August 31st on Loop" (ループする8月31日, Rūpu suru Hachigatsu Sanjūichinich)
  2. "Ordering a Parfait on August 31st" (パフェを頼む8月31日, Pafe o Tanomu Hachigatsu Sanjūichinichi)
  3. "LINE Messages on August 31st" (LINEする8月31日, LINE Sūru Hachigatsu Sanjūichinichi)
  4. "At the Pool on August 31st" (プールする8月31日, Pūru suru Hachigatsu Sanjūichinichi)
  1. "Invited Over on August 31st" (かよばれする8月31日, Kajobare suru Hachigatsu Sanjūichinichi)
  2. "Out of Control on August 31st" (暴走する8月31日, Bōsō suru Hachigatsu Sanjūichinichi)
  3. "Running like the Wind on August 31st" (疾走する8月31日, Shissō suru Hachigatsu Sanjūichinichi)
  4. "Devising a Plan on August 31st" (計画する8月31日, Keikaku suru Hachigatsu Sanjūichinichi)
2November 22, 2023[9]978-4-06-533664-9July 8, 2025[10]979-8-89373-175-0
  1. "Being Fashionable on August 31st" (おしゃれな8月31日, Oshare na Hachigatsu Sanjūichinichi)
  2. "Planning for the Future on August 31st" (進路する8月31日, Shinro suru Hachigatsu Sanjūichinichi)
  3. "Back to the August 31st, Part 1" (バック・トゥ・ザ・8月31日 PART I, Bakku tu za Hachigatsu Sanjūichinichi PART I)
  4. "Back to the August 31st, Part 2" (バック・トゥ・ザ・8月31日 PART II, Bakku tu za Hachigatsu Sanjūichinichi PART II)
  1. "Back to the August 31st, Part 3" (バック・トゥ・ザ・8月31日 PART III, Bakku tu za Hachigatsu Sanjūichinichi PART III)
  2. "Practicing on August 31st" (練習する8月31日, Renshū suru Hachigatsu Sanjūichinichi)
  3. "Karaoke on August 31st" (カラオケする8月31日, Karaoke suru Hachigatsu Sanjūichinichi)
  4. "August 31st Will Always Come, Part 1" (きっとくる8月31日その壱, Kitto Kuru Hachigatsu Sanjūichinichi Sono Ichi)
3February 22, 2024[11]978-4-06-534649-5November 4, 2025[12]979-8-89373-540-6
  1. "August 31st Will Always Come, Part 2" (きっとくる8月31日 その弐, Kitto Kuru Hachigatsu Sanjūichinichi Sono Ni)
  2. "August 31st Will Always Come, Part 3" (きっとくる8月31日 その参, Kitto Kuru Hachigatsu Sanjūichinichi Sono San)
  3. "Coed on August 31st" (共学する8月31日, Kyōgaku suru Hachigatsu Sanjūichinichi)
  4. "The Final Battle on August 31st, Part 1" (決戦は8月31日 PART 1, Kessen wa Hachigatsu Sanjūichinichi PART 1)
  1. "The Final Battle on August 31st, Part 2" (決戦は8月31日 PART 2, Kessen wa Hachigatsu Sanjūichinichi PART 2)
  2. "The Final Battle on August 31st, Part 3" (決戦は8月31日 PART 3, Kessen wa Hachigatsu Sanjūichinichi PART 3)
  3. "The Final Battle on August 31st, Part 4" (決戦は8月31日 PART 4, Kessen wa Hachigatsu Sanjūichinichi PART 4)
  4. "Going on a Trip on August 31st, Part 1" (旅行する8月31日 PART 1, Ryokō suru Hachigatsu Sanjūichinichi PART 1)
4May 22, 2024[13]978-4-06-535579-4February 3, 2026[14]979-8-89373-768-4
  1. "Going on a Trip on August 31st, Part 2"
  2. "Going on a Trip on August 31st, Part 3"
  3. "Going on a Trip on August 31st, Part 4"
  4. "Going on a Trip on August 31st, Part 5"
  5. "Going on a Trip on August 31st, Part 6"
  1. "Going on a Trip on August 31st, Part 7"
  2. "Going on a Trip on August 31st, Part 8"
  3. "Going on a Trip on August 31st, Part 9"
  4. "An August 31st Without You"
5August 22, 2024[15]978-4-06-536597-7May 12, 2026[16]979-8-89373-965-7
6November 21, 2024[17]978-4-06-537523-5August 25, 2026[18]979-8-89561-454-9
7February 21, 2025[19]978-4-06-538473-2——
8May 22, 2025[20]978-4-06-539526-4——
9August 22, 2025[21]978-4-06-540614-4——
10November 21, 2025[22]978-4-06-541440-8——
11February 20, 2026[4]978-4-06-542536-7——

See also

References

  1. ^ 8月31日を何度も繰り返す男女…恋と真っ向から対峙する青春タイムループコメディ. Comic Natalie (in Japanese). Natasha, Inc. August 23, 2023. Retrieved February 3, 2025.
  2. ^ a b "Series: The Long Summer of August 31". Seven Seas Entertainment. Retrieved February 3, 2025.
  3. ^ Cayanan, Joanna (March 30, 2023). "I'm Not Meat's Ikkado Ito Launches New Manga". Anime News Network. Retrieved February 3, 2025.
  4. ^ a b ８月３１日のロングサマー（１１） (in Japanese). Kodansha. Retrieved February 9, 2026.
  5. ^ Hazra, Adriana; Tai, Anita (September 12, 2024). "Kodansha's K MANGA Platform Adds The Long Summer of August 31st, Chaos Game Manga in English". Anime News Network. Retrieved February 3, 2025.
  6. ^ Tai, Anita (October 9, 2024). "Seven Seas Licenses Fairy Cat, Sex Drive, The Long Summer of August 31, 4 More Titles". Anime News Network. Retrieved February 3, 2025.
  7. ^ ８月３１日のロングサマー（１） (in Japanese). Kodansha. Retrieved February 3, 2025.
  8. ^ "The Long Summer of August 31 Vol. 1". Seven Seas Entertainment. Retrieved February 3, 2025.
  9. ^ ８月３１日のロングサマー（２） (in Japanese). Kodansha. Retrieved February 3, 2025.
  10. ^ "The Long Summer of August 31 Vol. 2". Seven Seas Entertainment. Retrieved February 3, 2025.
  11. ^ ８月３１日のロングサマー（３） (in Japanese). Kodansha. Retrieved February 3, 2025.
  12. ^ "The Long Summer of August 31 Vol. 3". Seven Seas Entertainment. Retrieved May 6, 2025.
  13. ^ ８月３１日のロングサマー（４） (in Japanese). Kodansha. Retrieved February 3, 2025.
  14. ^ "The Long Summer of August 31 Vol. 4". Seven Seas Entertainment. Retrieved August 12, 2025.
  15. ^ ８月３１日のロングサマー（５） (in Japanese). Kodansha. Retrieved February 3, 2025.
  16. ^ "The Long Summer of August 31 Vol. 5". Seven Seas Entertainment. Retrieved August 15, 2025.
  17. ^ ８月３１日のロングサマー（６） (in Japanese). Kodansha. Retrieved February 3, 2025.
  18. ^ "The Long Summer of August 31 Vol. 6". Seven Seas Entertainment. Retrieved March 20, 2026.
  19. ^ ８月３１日のロングサマー（７） (in Japanese). Kodansha. Retrieved February 3, 2025.
  20. ^ ８月３１日のロングサマー（８） (in Japanese). Kodansha. Retrieved April 11, 2025.
  21. ^ ８月３１日のロングサマー（９） (in Japanese). Kodansha. Retrieved July 12, 2025.
  22. ^ ８月３１日のロングサマー（１０） (in Japanese). Kodansha. Retrieved November 2, 2025.
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