Seto Ichitaka, a second year high school student, has liked his classmate Yoshizuki Iori since the first year. Then the two of them become committee members of the welcome party for freshmen. When Ichitaka gradually opens up to Iori, his childhood friend Akiba Itsuki shows up all of a sudden.
A female student at a prestigious high school goes missing. She had everything including looks, smarts and boyfriend. Her disappearance affects 4 other female students that knew her.
When Natsuki Aizawa was a child, she was kidnapped which left her traumatized. Natsuki grew up relying on her friend Kentaro Yuki. She now studies physics at a university. One day, she meets newly appointed professor Shuya Tatsumi. Afterwards, mysterious events continually happen around Natsuki Aizawa. Shuya is time traveller who travels between the future and the past.
Okuyama Haruka, previously known under the stage name Taketomi Seika, is a former Japanese actress and fashion model. In 2021, she announced through her social media she had gotten married and was retiring from the entertainment industry, choosing instead to pursue a career in drag racing.