User blog comment:Damesukekun/Song Translating and Mistranslating/@comment-26282708-20161001204936/@comment-173.57.65.128-20161001214231

if it's on piapro, meaning it's the composer posting the kanji themselves, I think

http://vocaloidlyrics.wikia.com/wiki/%E5%97%9A%E5%91%BC%E8%89%AF%E3%81%84%E4%B8%8A%E3%82%92_(Aa_Ii_Ue_wo) there's also a page here (no english though)