Hiyori-senpai. His real name is Hiyori Yasume. He bursts out laughing when called "Yasume-senpai." (Apparently it sounds like "Take a break, senpai," and he finds it funny.) He's bothered by people misreading his name as "Biyori-senpai." Since his company allows casual clothes, he wears his own clothes. The allure of his shoulder peeking out from under his loosely worn parka, and his armpit glimpsed only when he stretches, knocks out the junior women every single time.