Saikin, Imouto no Yousu ga Chotto Okashiinda ga.

A family that is just beginning to reconstruct is followed in Saikin, Imouto no Yousu ga Chotto Okashiinda ga. Mr. and Mrs. Kanzaki bring their teenage son and daughter with them when they get married. However, Mitsuki Kanzaki, a freshman in high school, is not overjoyed. She struggles to accept her stepfather and stepbrother because of a background of absent and violent father figures. However, after an accident puts Mitsuki in the hospital, the spirit of Hiyori Kotobuki—a young woman who was madly in love with Mitsuki's stepbrother Yuuya—takes control of her. Due to her unrequited love for Yuuya, Hiyori is unable to receive her ultimate reward, therefore she must have it... in Mitsuki's body? Now, getting Hiyori to Heaven is crucial to Mitsuki's survival. But will she grow accustomed to giving a forceful, adoring ghost access to her body? Can she get over her skepticism of her adopted family? Can she have the strength to reciprocate Hiyori's emotions for Yuuya? And may she be concealing some of her own emotions?