Toshihisa Saitou

Toshihisa is a 25-year-old salaryman who works with Atsushi and has been friends with him since university. The morning after getting married, Toshihisa wakes up to find that his wife had run off with a section chief from Kenzou's company. He relies on Atsushi a lot without knowing about his true feelings, but later begins playfully kissing Atsushi and flirting with him.