CLEAVAGE

The main character, Todo Yuto, is an ordinary student attending a certain school.My father was promoted and transferred to the airport and saw him off.From there, the life of my sister and my life begins.In fact, my sister and Yuto are not related by blood.A new mother and sister (Erika) arrive at Yuto's house, who grew up without a mother.My mother was very kind, but she collapsed and passed away... that's how it was. On the way home, the two were having a conversation on the train almost on a crowded train, and the train shaking and losing their balance, stumbling and closeting. She dyes her cheeks aloof like a couple who have begun dating. When Yuto still looks at her mother and mother in the old photos, Erika tries to get caught up in Yuto and put it on her butt every time.Yuto initially felt that way.However, over time, he realizes that his feelings gradually change from shunning to something closer to love. Her older sister, Erika, also became Yuto's older sister and mother, and stopped hiding herself as a woman.Ichinose Sayaka, the music teacher at the school they attend, happens to find out about the incredible relationship between Yuto and Erika, and using that as a joke... it is revealed in a sequel!!