Birthday
November 11
Kozakura speaks in a candid fashion and detests Toriko's officious behavior around her. She, however, tolerates Toriko's behavior as she goes out of her way to search the mysterious land of the Otherside, in hopes to find her friend Satsuki. Kozakura had explained that her serotonin transport gene is short (prone to get scared easily), she avoids going to the Otherside as much as possible, leaving Sorawo and Toriko to do the fieldwork instead. Despite her blunt and insensitive attitude towards the pair, she cares and looks after them, sometimes showing concern whenever they go to the Otherside.

Otherside Picnic
Her first encounter with Toriko Nishina was on the Otherside after seeing "that thing" and nearly dying. Ever since that day, exhausted university student Sorawo Kamikoshi's life changed. In this Otherworld, full of mystery, which exists alongside our own, dangerous beings like the Kunekune and Hasshaku-sama that are spoken of in real ghost stories appear. For research, for-profit, and to find an important person, Toriko and Sorawo set foot into the abnormal. A tale of two girls' bizarre exploration and survival...