Rina lives in Tokyo at her sister's house, relying on her older sister Shinya, who is married and lives in Tokyo. A husband is worried about the responsibility of taking care of his teenage daughter and the blooming women in her boyfriend's story recently published. Saeki, who had legitimately come to greet him when seeing Rina off on the way home from a date, was a friendly man. However, although this man looks serious on the outside, he actually likes women. Lust for Shinya without censorship …