Also known as: 田中慶司, 慶雀
The deuteragonist of 40 Made Ni Shitai 10 No Koto. He is Toujou Suzume's subordinate at work and also 10 years younger than him. While he pretends to be a playboy around women, he is in love with Suzume.
Voiced by Eguchi Takuya in the drama CD version. Portrayed by Shouji Kouhei in the TV drama
In the manga, Keishi has short Blonde Hair. While in live action version, he has short Brown Hair which is visibly parted on the center and is curlier than his manga counterpart. He wears Glasses.