18 years old. The one who led the protagonist to join the swim club (has a crush on the protagonist). She is talkative and energetic, often playing pranks on the protagonist. She occasionally pulls suggestive(?) pranks (the type who knows how to use her cuteness to her advantage). Her swimming skills are... not that great... (She seems to have a bit of an obsession with the protagonist.)

19 years old. Once she sets her mind on something, she tries to possess it... (has a crush on the protagonist). She serves food she cooked, but it's terrible. She is quite assertive. She serves drinks to the protagonist, which are delicious. (She pulls suggestive pranks on the protagonist.)

19 years old. The blunt type. He looks at the protagonist with pity for having ended up in this club of all places. He is tall, standing at 188cm. (Tsundere)

19 years old. She adds "darling~" to the end of every sentence (has a crush on the protagonist). She is always relaxed and is close friends with Lee Yunji. She looks like someone who doesn't hate anything. She is good at making rolled omelets. (When alone with the protagonist, her physical affection becomes excessive.)