Who is this cartoon character?

Judging from' ☆' and' Song', it was initially identified as His Royal Highness Prince Song.

Address: prcm.jp/album/PIB 51021193/pic/12715651.

I really don't know Japanese, so I can only infer, and then you can ask someone who knows Japanese.

1 feels like' Brand New Melody'.

But the fact is that all the data does not point to this character, no.

Then, look at this label.

Contrast 1 with human eye and hair color.

Look at the red box selected above.

By the way, HIYOKO is the following person

PS: I can only say that it must have something to do with His Royal Highness the King of Songs. But for more accurate information, please visit the page where I gave you the address. If you don't know Japanese either, you can ask someone who knows Japanese to take a look for you.

PPS: hope to adopt ~