A trainee manager who joined the major talent agency six months ago. She's nervous and excited for her first Halloween party. Sometimes her over-eagerness leads her to spin her wheels.

Rin's best friend. A music student majoring in piano. For some reason, she ends up participating in this Halloween party. A young lady who is a bit timid but has a strong core.

A super-popular idol managed by the protagonist and Rin. Like Rin, he's looking forward to the Halloween party. He's friendly and kind to everyone, and is very attached to the protagonist.