So many DX! I'm surprised 更多 初音未来 weren't 发布 o.o What if the characters don't actually sing in the 日本动漫 but they do their own OPs and EDs? Hmm well I was going to post Kyouko from YuruYuri since she's included 唱歌 in the OP and ED of YuruYuri but I change my mind I'll just stick with Mio Akiyama from K-ON. Also surprised I haven't seen Nana O. from Nana 发布 XP
Here's a song not very well known 由 Mio <3 I have yet to find the English lyrics though so don't ask me what she's 唱歌 about :c