Stupid:
Shiro been told about her personality of course but really, being so eager to meet her new neighbor, whom she knew nothing about, that she'd try to climb down a tree at night, in winter, in nothing but her pajama's to say hello wasn't really innocent, it was just stupid.
Innocent:
Tomoaki couldn't even begin to fathom the innocents of a high school girl who just asked a strange man, who had just revealed himself to be a erotic writer, and ask him about sex. He shook his head chuckling; it was adorable in its own way and worrying as well. He wasn't one to take advantage but he found himself worried that the next person she asked would not be able to see it in the same innocent light. Shiro would have his hands full with that one, that's for sure.
Clueless:
Emi at times gets frustrated with Hina's clueless innocents. Honestly! If been in masks in a large van asked nicely she'd probably hop in and tie herself up after writing the ransom note for them!
Pure:
Touka can only think that Hina is pure, an angel sent to earth to bring beauty to an otherwise bland world. Sometimes she almost thinks that it was simple selfishness, not friendship the drove her to transfer with Hina, she couldn't imagine going through months without Hina and her bright pure smile.