Houkago, Famiresu de, Class no Ano Ko to.

Narumi Kouta is a second-year high school boy. When his mother remarried, along with a new father came a talented step-sister. Unable to adjust to his new life, he took a part-time job to get out of the house, and he spends his time at a family restaurant until closing time before going home.

One day, Kouta notices that there is a girl...