Bij het horen van de dood van Ushio keert Shinpei terug naar zijn geboorteplaats Wakayama City op Hitogashima en herenigt hij zich met de familie van zijn jeugdvriend. De begrafenis verloopt vlot, maar onder de oppervlakte broeit er iets vreemds op het eiland. Welke mysteries staan hem te wachten op dit afgelegen zomereiland?
| Writing | 瀬古浩司 | Series Composition |
| Directing | 渡辺歩 | Series Director |
| Visual Effects | Miki Matsumoto | Character Designer |
| Sound | Keigo Hoashi | Original Music Composer |
| Sound | 高田龍一 | Original Music Composer |
| Sound | Keiichi Okabe | Original Music Composer |
| Visual Effects | 秋元由紀 | Color Designer |
| Directing | 中野悟史 | Assistant Director |
| Art | 赤坂杏奈 | Art Direction |
| Art | 畠山佑貴 | Art Direction |
| Art | 多田周平 | Art Designer |
| Camera | 木村俊也 | Director of Photography |
| Editing | 小島俊彦 | Editor |
| Sound | 小泉紀介 | Sound Director |
| Art | 佐藤和巳 | Prop Designer |
| Art | Yuki Matsuo | Prop Designer |
| Visual Effects | 為水翔太郎 | Lead Animator |
| Crew | 小川猛 | Special Effects |
| Editing | 加藤慎也 | Online Editor |
| Editing | 石井知 | Online Editor |
| Sound | Masatoshi Katsumata | Sound Editor |
| Sound | Shunsuke Hongo | Sound Editor |
| Sound | 大隅啓良 | Music Producer |
| Production | Yuki Matsuzaki | Producer |
| Production | 下里悟 | Producer |
| Production | 倉島真由実 | Producer |
| Production | 吹野史斉 | Producer |
| Production | Fumitaka Kitazawa | Producer |
| Production | 外川明宏 | Producer |
| Production | Kazuya Nose | Producer |
| Production | 長谷川友紀 | Associate Producer |
| Sound | Toshihiro Hayano | Sound Mixer |
| Writing | Yasuki Tanaka | Comic Book |
