I'm just gonna assume Iino broke her arm trying to get into Yuu's pants
On a side note, there's a lot of thirsty girls at that school. Is pocari sweat not allowed or something ? They need electrolytes.
Y'know, I was hoping Shiro would have a more 'Mature'(read as erotic) speech in the anime. Sadly I'll never be able to read the manga the same way now that I have put a face with a voice.