Release date: Summer, 2025 on Netflix.

Synopsis: Yoshiki and Hikaru live in a rural village and have been close friends since they were young. On a perfectly ordinary summer day, as they laugh over trivial things, Yoshiki turns to Hikaru and says: “You’re not Hikaru, are you?”

Six months earlier, Hikaru went missing in the mountains and returned unexpectedly a week later. The new Hikaru looks and sounds just like the original, but something else is stirring within him.

Yoshiki continues spending his days with the “something” imitating Hikaru, while pretending as if nothing has changed.
Meanwhile, strange incidents begin to plague the village. Thus begins this coming-of-age horror story.

Voice cast:
Chiaki Kobayashi as Yoshiki Tsujinaka
Shuichiro Umeda as Hikaru Indou
Yumiri Hanamori as Asako Yamagishi
Wakana Kowaka as Rie Kurebayashi
Chikahiro Kobayashi as Tanaka

Crew:
Directed by Ryohei Takeshita.
Based on the manga by Mokumokuren.
Character design by Yuichi Takahashi.
Music by Taro Umebayashi.
Ending theme song: “Anata wa Kaibutsu (you are my monster)” by TOOBOE.
Animation production by CygamesPictures.