
OK, please, take good care of yourself, take your time to recover -health always comes first- and come back stronger than ever to please punish that stupid jerk of jk, to make him suffer and to end this story with him swimming in a pool full of his own shit :) Thank you for all your hard work (●'◡'●)ノ

I wish this shit ended like this tbh: Kim Dan flying away from the shitiest shit, free, mourning his granny, and the shit feeling like the shit he is. A couple of side chapters about Kim Dan swimming in the ocean, taking a sunbath and thinking: "wow, this is fine, he was an asshole, now I realise". That's it. Happy ending. Good work, team. Next story.

Sorry, I have a question. Does anyone know where I can buy this manga in English? I only find it in French and German. Thank you!

Yep! The best way to get official English translations is to support the English manga publishers :). Sublime has some of the big titles like:
Finder from Ayano Yamane
The World's Greatest Love/sekaiichi hatsukoi by Shungiku Nakamura
Don't Be Cruel/Hidokushinaide by Yonezou Nekota
and will release
Escape Journey by Ogeretsu Tanaka
Coyote and Void by Ranmaru Zariya (Can't waaait!!)
Ten Count by Rihito Takarai
June Manga has quite a few precious Yoneda Kou titles including Saezuru Tori wa Habatakanai/Twitter Birds Never Fly. Also titles from
Otsuki Miu
Hideyoshico
Hinago Takanaga (all of "Tyrant Falls in Love")
And even Seven Seas got "Go For it, Nakamura!" by Syundei which is a super cute title!
IMO June Manga has the better website and catalogue for what I like BUT Sublime books are easier to get at other vendors, in my experience.
There are residential buildings in my neighborhood smaller than that dick.