Probably a oneshot of a guy looking for an engagement ring and he enters a chinese looking place that ends up being a dragon clan whatever place. He gets a ruby ring and I think he also wears some other jewelry in his body
http://www.mangago.zone/read-manga/koibito_wa_hatsujouki/
I'm pretty sure it's chapter 7 of this.
Naono sure has a thing with PEOPLE PUNCHING AND LEAVING BRUISES IN THEIR BEAUTIFUL FACE
Don't cha know? Naono is showing that her characters are perfectly imperfect. Plus, it gives her characters a more real feeling.
(=・ω・=)
She didn't have to hurt EVERY poor baby T.T
Lol, yes. That's true