Kenbishi Masato

30 years old.

While he used to be quite a player, after a girl broke his heart he hasn't been paying attention to females much.

The girl who broke his heart was Mitsuko, who ended up marrying Masato's old friend and late employer. While Masato still have feelings for her, Mitsuko was very loyal to her deceased husband and did not warm up to any other man. Thus, Masato was kind of giving up.