Tachibana Crystal (played by Komatsu Nana) is a 17-year-old female high school student. Unlike girls of the same age, Tachibana Crystal has a calmness that transcends her age and is already a little indifferent. In her spare time, Ju Jing works in a family restaurant. The store manager Kondo Masaki is Ju Jing's boss. Zhengji is a sloppy person...