Yamada-kun to Tanaka Kachou

My company senior is gay?! I didn't even want to know that secret – but why was such a delicate and cute person thrown away by another man?!

Section Chief Tanaka is a zealous 30-year-old who works for Oote Food's advertising group. Yamada, a cool subordinate, is tasked to look after Chief Tanaka and he is very much envied by his colleagues.

Hazuki is a member of the product planning department. His co-worker, Watanabe, has the top business performance transfers in the department. Hazuki has held animostity towards Watanabe, thinking he is completely different from himself; he is attractive with a good personality. But ever since Watanabe invited Hazuki out to eat on the weekend, Hazuki has been going to Watanabe's house to eat hot pot and the private time that they spend together becomes fun. Then Hazuki learns about Watanabe's secret and the relationship between the two starts to change…?