Seiren is a sequel to the similarly-structured Amagami adaptation, set in the same high school, albeit 9 years later.

Shōichi Kamita is a second-year high school student who is worried about university exams and his future.

[4] TBS revealed plans for a new anime series, with Kisai Takyama working on the project.

These major arcs are focused on three characters: Hikari Tsuneki, Toru Miyamae, and Kyōko Tōno.

[14] However, it was also noted that there were plans for character arcs involving Miu Hiyama, Makoto Kamizaki, and Ruise Sanjō in the future.