21-year-old Junpei is a low ranking gangster. He is busy taking care of miscellaneous works. One day, his boss gives him a mission to kill a high ranking gangster from a rival group. Junpei wanting recognition from his group, accepts the assignment. Junpei meets Kana and they spend the night together. He tells her about his assignment. She thinks his enthusiasm for the job his assignment, but she also feels some excitement. She stays with him for 3 days until he carries out his mission.
Problem student Haru Yoshida sits next to the cold and studious Shizuku Mizutani in class. Without any other friends to turn to, both of them start to get to know each other and grow closer. Haru eventually develop feelings for Shizuku and confesses his feelings to her. Will Haru and Shizuku get their happily ever after?
Kogure Nao is a shy and cute high school student. One day, Onise Taiga asks her "would you like to date with me on the promise that we will get married?" Nao is unable to turn down his proposal because she is scared of him. Taiga has red hair and piercing eyes. His appearance gives off the impression that he is a bad boy, but he is actually considerate to others and good at cooking. After getting to know Taiga, Nao begins to have feelings for him.