Age: 15
Birthday: September 29
Height: 170.2 cm

His name is a pun on "just a guy," he is normal and average in every way. In the one-shot, his name is Shigeo Tadano.

Claims his specialty is "reading the room," which is shown when he is the first person to notice that Komi is not rude, or looking down on anyone.

He is the first person to become friends with Komi.