碧海 らむね

Luna's and Coronas childhood friend. Daughter of ramune makers, she always loved ramune and if she doesn't have some ramune, even for an hour she starts shaking and having vertigo, also any ramune tastes delicious to her if she drinks in a ramune recipient, no matter how bad it really tastes. She's the group's pet, along with Luna, and many times is treated like a dog, for funny purposes. She loves Luna and every single morning gives him ramune. Very popular among girls.

She's usually made fun of inside the group, specially by Corona and Iris. The girls in the group even touch and kiss her to make her embarrassed, and after the usual tsukommi, she doesn't seem to care much. Like Luna, she's pure in romantic subjects and get flustered quickly. She loves the girls just as much she loves Luna, and because of that she doesn't want to break the group apart by starting a romantic relationship with Luna.

Recently her family is starting to have financial problems. Their ramune is very delicious, however is not very popular. She's trying to win the "B Contest", a contest regularly opened by RCM, so her family's buisness can become RMC buisness partner.