Ryouseirui (両声類) literally translates to "both vocal species", and is a Japanese term to describe people who are able to sing two genders (a high voice and a low voice). An English term of somewhat similar meaning is "androgynous."
Mafumafu is such a talented ryouseirui! He can go from a male voice to a completely female one without any effort!
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.