Responses
I felt like I had read this so I tried looking around. Found a manga and it wasn't what I was remembering since I've never read this one but it matched well with what you're looking for. I only skimmed it up till the dick piercing (chp.2) though aha:
http://www.mangago.me/read-manga/kimochi_no_yukue_meiji_kanako/
Lookin' for a manga that involved passive twins that fell in love with their child hood friend and when he was seen hanging out with another man, they got mad and pierced his dick. Claiming him almost.
Plz help