They're indeed end up as step brother, their parents get married and have a son. So the son is their each half blood brothers, and his face looks like mix of them. Oh I'm in ch. 57 currently, they already have sex twice but they still keep it secret. They're not coming out yet.
Where are you reading the raws?
bato had it uploaded to the most recent chapter but here its really freaking behind. like 30+ chapters behind
Here's the Korean raw
https://tkor116.com/%EB%81%8A%EC%9D%84-%EC%88%98-%EC%97%86%EB%8A%94-%EA%B1%B4
Do we have a site with up to date English version?
I hope you find money out of nowhere thank youuu
I love you (∩´∀`∩)
Dropping bc stepbrother genre makes me uncomfortable but the art is sure beautiful guys let me know if they really end up being step brother.