He is Sawamura Minori's boyfriend, and he works at Takebo toy company.
He and Minori are college friends who graduate together with big dreams of working at their favorite toy company.
Hatsuhi Ryou is created by Chihiro Harumi, and he has no information regarding any inspiration used to create him. Ryou first appears in chapter 1 of Koi o Suru no ga Shigoto Desu volume 1.
His usual attire is a business suit and tie like a white collar/salary man would wear. At home, he wears normal clothes.
He is oblivious to other women who have interest in him like Aiko. He is faithful to Minori and will not cheat on her, and he is devoted to making Minori happy even if he has to sacrifice his job.