Is he in a manga?

I also want to know

I feel like I've read it before but i can't remember the name!
If you have time, you can search through bakaupdates for it. https://www.mangaupdates.com/groups.html?id=681

Found it: http://www.mangago.zone/read-manga/sono_kuchibiru_ni_ai_wo/

Thankyoooouu