User blog comment:Wynn22/BiBi and Printemps' Second Albums/@comment-6021376-20130630215447/@comment-5592165-20130701014615

I don't know about about Niko's participation in BiBi (she do sing her part well, or so I thought). To Maki's and Eri's voice, hers is like a huge contrast.

But she make a great team with Rin and Hanayo. :D