Rina
A reasonable, level-headed girl who happens to be well-endowed—which, unfortunately, is basically all anyone ever notices about her. She gets stuck playing the straight man in most situations, constantly exasperated by the chaos around her.
She's got a pretty obvious brother complex when it comes with her otaku half-brother, which is its own whole thing. Despite everything, she's probably one of the more grounded people in the group, even if nobody gives her credit for it.
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