Riona Yui is a sister who lost her mother and was raised by her father. Hated her father, who had been unfaithful since her mother's death, her younger sister Riona lived alone and her older sister Yui took care of her father. One day, her father was hospitalized due to illness, but Riona refused to meet him. She was held by her father. And Yui who is jealous of her sister and hits coldly. However, Rina, who still loves her sister, touches Yui's body to return her to the kindness of her older sister.
