- Rintarou Okabe: Urushibara Ruka. The mannerisms and voice of a woman. No. More feminine than any woman. But he's a guy. Taller than Mayuri, but so very thin. But he's a guy. Looks great in a miko outfit. But he's a guy. It's already twilight and yet, it's so hot. The cicadas are crying. But... He's a guy.