Have you ever lost anything that was so precious to you, that if it were gone you wouldn't know what to do? For Otokawa Natsuru, that item is a keychain. Hearing from Kazama Miori, a fellow student with renowned psychic powers, that taking something precious can help with relationships, Natsuru takes her keychain on a date with childhood friend Yanagi Eitaro. But somewhere along the date, her precious keychain is lost...

Have you ever lost anything that was so precious to you, that if it were gone you wouldn't know what to do? For Otokawa Natsuru, that item is a keychain. Hearing from Kazama Miori, a fellow student with renowned psychic powers, that taking something precious can help with relationships, Natsuru takes her keychain on a date with childhood friend Yanagi Eitaro. But somewhere along the date, her precious keychain is lost...