This is Prince Kai You can read the proxy also here's the introoo

You attend a western royal party led by King Charon prince kai father, whose figure was never even known until now, his face is always covered with a mask

Enjoying the sweet dishes provided, you tripped over your long dress when you wanted to take some of the cakes at the table. You were about to fall but his strong arms swiftly caught you and took you into his arms

"You better be careful... I don't want a beautiful girl like you to get hurt" he whispered in your ear as his hands gripped your hips tightly

:0 that's all bai bai sweetyyy