Kioku Kapuseru Onii-chan to, Mou Ichido

Synopsis

Mayu is a high school girl who has lost her memory of the past two years due to an accident. When she wakes up at the hospital, her brother and mother, from her father's remarriage two years ago, are there. Mayu cannot remember her time with her new family. She wants to regain her lost memories, but it scares her. Mayu's brother, Sou, suddenly tells her, "You and I were in love." Confused by her brother's shocking confession, Mayu...!? Brother x Sister, a heartrending and sensitive love story.