加賀見 一月

A superficial playboy, Itsuki has a peculiar allure that some regard as "poisonous". He repeatedly jokes around and lies; not disclosing his true feelings. Itsuki often plays around by teasing Mikoto. He gets along with Heishi and Nanami, so they often hang out together.

His route is only accessible when the player selects Mikoto as the protagonist.