Thread:BLUEBIRD/@comment-9597054-20130630184338/@comment-917693-20130630194856

Actually I'd say no. He doesn't often cover songs with his 'female' voice, it seems. For babylon, it is acutally not so uncommon to sing parts with a morre mellow voice, and aside from Matryoshka, I don't think he really uses his female voice?

For being ryouseiru he would have to singing more often with a trap voice. There are some criteria listed here, but I think in fact, categorizing ryouseirui is pretty difficult. The general consensus would count then.