Aoumi Lamune

Luna's and Corona's childhood friend. The daughter of ramune manufacturers, she always loved ramune and if she doesn't have some ramune even for an hour, she starts shaking and having vertigo. Any ramune tastes delicious to her if she drinks it in a ramune bottle, no matter how bad it really tastes. She's the group's pet, along with Luna, and is often treated like a pet for comedic purposes. She loves Luna and gives him ramune every single morning. She is very popular among girls.

She's often made fun of inside the group, especially by Corona and Iris. The girls in the group also touch and kiss her to embarrass her, and after the usual tsukkomi, she doesn't seem to care much. Like Luna, she's naive when it comes to romantic matters and get flustered easily. She loves the girls just as much as she loves Luna, and because of that she doesn't want to break the group apart by starting a romantic relationship with him.

Recently her family has started to run into financial problems. Despite their ramune being very delicious, it is not very popular. She's trying to win the "B-Grade Gourmet Contest", a contest regularly held by RMC, so her family's business can become an RMC business partner.