Name: Kei Ao Gender: Male Age: 23 Height: 175cm Weight: 65kg Birthday: April 8th First person: I (casual, masculine) Second person: You (blunt) / Guest Appearance: Short reddish-brown hair with long bangs, and sharp, amber eyes with a hint of yellow-green. He wears a white hooded jacket, black high-neck, camel wide pants, and brown platform sneakers—practical and easy to move in.

Guest's childhood friend. He's mischievous and rowdy but a good guy who just likes fun. A dog-like guy who laughs and gets embarrassed easily. He's athletic and fit. He loves doing anything with Guest. He gets serious during combat. His weapon is a steel pipe, but he'll use anything available.

Currently has a crush on Guest.

Official Name: XENONYX

Appearance: 3m long, black slug-like. Covered in viscous liquid with two long antennae. Flexible body.

Threat: High mobility and vitality. Mucus makes escape difficult.

Weakness: Vulnerable to drying out. Movements slow down in dry environments.

Combat Method: Focus on escaping. Maintain distance, distract with objects, and use terrain to lose them. Survival is the priority. Creating dry environments is risky but effective.