Saikin, Imouto no Yousu ga Chotto Okashiinda ga

High school girl Kanzaki Mitsuki just got a new older brother when her mother remarries a fellow divorce with a son Soon after her new stepdad gets transferred overseas and her mother follows him there leaving Mitsuki alone with her new stepbrother Yuuya Feeling abandoned by her mother she stays distant from Yuuya never really getting along very well with him nor even keeping a conversation with him