Mashiro Rina♀

Rina is the youngest resident of the house and is half Japanese, giving her an exotic look, which is quite charming. She is one of the granddaughters of Touka and Kazane's grandfather and is therefore one of their cousins. Sweet, popular, open to all topics of discussion and easily affordable, Rina has many friends at school and gets along beautifully with the other residents even with Sakura-sensei, however none of her acquaintances are passionate about video games and so she often finds herself playing alone in her room on days when she doesn't go out with her friends.

When Kanata arrives in the house, she is quite happy to meet him because she has heard a lot about him (in a positive way) from Touka, Aya and Kazane and was therefore quite eager to meet him. To tease him a little, she decided to call him "Onii-chan" because he seems embarrassed when she calls him that and she likes to see him that way.

She quickly introduced Kanata to her sanctuary (room) dedicated to video games after a horrible insect that was walking around her room came out. They sometimes spend whole days playing together, attracting on Rina the jealousy from the other girls...