| At the end of the last summer vacation of high school, Youta Narukami spends his days preparing for the university entrance exams, when a young girl named Hina suddenly appears, proclaiming herself as the "god of omniscience." Youta is confused and does not believe Hina when she tells him "The world will end in 30 days." After witnessing Hina’s God-like predictive ability, Youta begins to believe her powers are real. Hina, who is innocent and childlike despite her supernatural powers, decides for some reason to stay at Youta’s home. Thus begins the start of their lively summer before the end of the world. |
| Name | Character | Episodes |
|---|---|---|
| Natsuki Hanae | Youta Narukami (voice) | 12 |
| Kikuko Inoue | CEO (voice) | 12 |
| Yui Ishikawa | Kyoko Izanami (voice) | 12 |
| Kenichirou Matsuda | Raita Oguma (voice) | 12 |
| Ryohei Kimura | Ashura Kokuhou (voice) | 12 |
| Yu Shimamura | Kako Tengan (voice) | 12 |
| Kaori Nazuka | Motoko Shiba (voice) | 3 |
| Ayako Kawasumi | Isuzu Satō (voice) | 1 |
| Kazuyuki Okitsu | Yatagarasu (voice) | 1 |
| Sayaka Ohara | Izanami's mother (voice) | 1 |
| Ryota Iwasaki | Festival visitor (voice) | 1 |
| Hidenari Ugaki | Doctor Asama (voice) | 1 |
| Masashi Nogawa | Authority (voice) | 1 |
| Masashi Nogawa | Ramen shop owner (voice) | 1 |
| Ryota Takeuchi | Izanami's father (voice) | 1 |
| Shinnosuke Ogami | Foreman (voice) | 1 |