Sato
He works for a store development consultant company. He has to go on a business trip to meet the owner of a new store, and he wants to use the opportunity to meet Ryoko, whom he had a crush on in college.
Makino
Sato's co-workers.
OI
Sato's workplace & college senior
Ryoko
Web writer for a small advertising agency. She is able to do her job well and is entrusted with many things. She is happy to hear from Sato, whom she had a crush on in college, for the first time in a long time.
Yamashita
Ryoko's business partner, a photographer