Was watching the OP, and was wondering who the heck is the black haired guy, and whether he was always in the OP before but just didn't notice. Good to know I haven't gone forgetful.
And for a Hikkikomori, Ryuu is weird. Hikkis usually shut themselves in because they are compelled to shut the outside world. But no, Ryuu shuts himself in fully because he chose to.
Kinda weird he has such a distate for the members of the fairer gender though, considering he's a hikki. Childhood trauma perhaps? I dunno, but I hope some girl can cure him... which going by how they were introduced in the same episode, I hope Rita will. XD