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?
| Sound | 帆足圭吾 | Original Music Composer |
| Directing | 渡辺歩 | Series Director |
| Writing | 瀬古浩司 | Series Composition |
| Sound | 岡部啓一 | Original Music Composer |
| Visual Effects | 松元美季 | Character Designer |
| Sound | 高田龍一 | Original Music Composer |
| Art | 多田周平 | Art Designer |
| Visual Effects | 秋元由紀 | Color Designer |
| Editing | 小島俊彦 | Editor |
| Art | 畠山佑貴 | Art Direction |
| Camera | 木村俊也 | Director of Photography |
| Sound | 小泉紀介 | Sound Director |
| Directing | 中野悟史 | Assistant Director |
| Art | 赤坂杏奈 | Art Direction |
| Art | 佐藤和巳 | Prop Designer |
| Art | Yuki Matsuo | Prop Designer |
| Visual Effects | 為水翔太郎 | Lead Animator |
| Production | Yuki Matsuzaki | Producer |
| Production | 長谷川友紀 | Associate Producer |
| Sound | 勝俣まさとし | Sound Editor |
| Sound | 大隅啓良 | Music Producer |
| Production | Fumitaka Kitazawa | Producer |
| Production | 吹野史斉 | Producer |
| Production | 倉島真由実 | Producer |
| Production | 外川明宏 | Producer |
| Sound | Toshihiro Hayano | Sound Mixer |
| Sound | Shunsuke Hongo | Sound Editor |
| Editing | 加藤慎也 | Online Editor |
| Crew | 小川猛 | Special Effects |
| Production | 下里悟 | Producer |
| Production | Kazuya Nose | Producer |
| Editing | 石井知 | Online Editor |
| Writing | Yasuki Tanaka | Comic Book |
