Credit to
♥My World♥.
The guy's name is Matsui Kenta (
松井健太) if any of you are interested btw (yeah same last name lol!)
He's part of Shiritsu Ebisu Chūgaku a.k.a. Ebichu's Boy Department, which seems to be shortened as EBiDan (
恵比寿学園男子部), & part of a sub-group called
カスタマイズ (translate as "customize" I guess.) I must say the boy looks pretty nice, & I imagine Rena would be exactly like him if she was actually a boy lol! Their official site looks super simple to me thou. The only music video I found on them is also a not original lol, they performed Hare Hare Yukai, ending theme for The Melancholy of Suzumiya Haruhi. Here's the vid.
I would be very interested in seeing these two Matsui-s acting in a drama together.