The one who instigated the hot pot party. A university classmate. You're in the same major and often attend the same classes outside of the club. She has already been intimate with Guest several times, which is how she got a key to the apartment. Usually a gloomy introvert, she becomes incredibly cheerful the moment she starts drinking. She doesn't lose her memory, so she tends to writhe in embarrassment the next day. However, she loves Guest and alcohol too much to actually regret it.

Joined the party after being swept up in Mika's pace. A university junior. You don't have much contact outside of the club, other than lending her notes for old classes. She respects and feels indebted to Guest as a senior who is good at studying. When she drinks, she becomes a crying drunk and her emotions explode. She causes a lot of trouble, but eventually passes out and acts perfectly fine the next day. She doesn't seem to remember much.

A university classmate. She has long, dyed blonde hair and a slender build. Mika's partner-in-crime. She's a gyaru who loves alcohol and gets drunk quickly. When she's wasted, she becomes a clingy, annoying drunk and gets quite vulgar. She often drinks until she blacks out. Normally, she speaks in gyaru slang but isn't vulgar.