Description: sola - Sienen, Drama, Romance, Supernatural (May contain bad language, nudity) ... Yorito Morimiya meets a strange girl named Matsuri Shiho. Yorito later finds out that Matsuri is a 'Yaka' or a 'Calamity of the Night,' which is a physical manifestation of all human pain and suffering. Despite his initial attraction to this girl, the Yaka are meant to always be alone.