Hehe, it's just a nickname, nothing really that special. [He began to blush, rubbing the back of his head in embarrassment. He doesn't seem to mind it that much, he's used to being overly familiar with people in the first place.]

Oi, its nice to meet you too, Usagi-san! Aww man, really? That sucks. Eh, I guess I can deal with it though. Shouldn't be too bad, right?