宗形 樹

He is a senpai clerk at "Plum Club," a video game arcade where the protagonist works part-time. He is a womanizer, and is always being warned by the protagonist, who is his kouhai, for hitting on female customers and staff.

He is a charismatic man who is mischievous but somehow still lovable. Although he is not a good worker, he is good at his job and is amiable, which makes his job run smoothly.

Although he looks like a simple man, he seems to be sharp and occasionally makes good points.