25 ways to annoy Rin Okamura 21. Replace his hair clip with a pink colour hair clip, when he is going to study. Call him a girl when he puts it on.2. Sing "Im a Barbie girl in a Barbie world" If he is still wearing the pink clip on his head.3. Steal all his homework and bury them somewhere.4. When he is searching for them tell him that Mephisto turned into a dog and ate all his homework.5. During class when Yukio demands an explanation from Rin for why he didn't do his homework, suddenly stand up and say "the dog ate his homework" ;D6. Break Yukio glasses and blame it on Rin.7. Invite Rin for lunch and turn it in to a mad hatter tea party