The story is about a brother who fell in love with his sister. Later, he died unexpectedly while trying to send his sister to school. However, when he arrived at the new school, he met a strange classmate who looked exactly like his brother. On the other side, there was a junior high school classmate who went to the same school with her because of the heroine. The new classmate fell in love with a girl who was in love with the heroine's brother. This started a series of stories -----------