Volume 1 Introduction: In her third year as a working adult, Aya, who has just turned 20, has her first junior colleague!
His name is Yamato Higa. He is 26 years old, 6 years older than Aya.
Higa-san is fresh and caring, and is very popular among the people in his department.
However, for some reason, he teases and shows his "male" side only to Aya, who is in charge of training him....
The mature and smart Mr. Higa takes the lead, and Aya is disturbed by his pace.
She can't work at this point......
