Akarui Kioku SōshitsuAkarui Kioku Sōshitsu.

Cheerful Amnesia (Japanese: 明るい記憶喪失, Hepburn: Akarui Kioku Soushitsu) is a Japanese yuri manga written and illustrated by Tamamushi Oku. It was serialized in Media Factory's Comic Cune from June 2016, to December 2020, and is licensed in English by Yen Press. The series follows Arisa, an amnesiac who is excited to experience dating her girlfriend after having forgotten all their time together.