Karin is one of the few true innocents around him that aren't children. And that's kinda debatable considering questionable ages of most of the cast lol.genuine question: did anyone even care about karin? kinda boring character, could partner up with futaba and go off to the space war and it wouldn't make much of a difference.
hoping these last events will finally breathe some action into her life cause god knows she needs some development.
Is she a bit bland? yeah, cause she's surrounded by weird and wonderful and that makes a nice normal(And very very naive) girl seem dull. She seems remarkably 'whole/unbroken' for this game, a bit like Touka, except Touka is a main girl and not a side piece with minimal interaction.