
rape is rape
you can't justify or excuse it
this applies to manga (mostly yaoi) in general, but y'all are just so goddamn insistent on "no no, I'm not a bad person... of course I don't condone rape, this isn't RAPE!" but yes, it IS rape and you have to admit it
no consent = rape, even if the victim seems to "like" it

just went back to the first chapter and wow, the art got really bad didn't it?
he used to look cute but now everybody looks like some deranged fuck :(
I feel like the author had an actual story planned out but got lazy and just started doing crazy things to end it

I didn’t even realize how different it looks now... are we sure it didn’t switch artists? http://www.mangago.zone/home/photo/4576402/
SO I JUST WENT BACK TO THE FIRST FEW CHAPTERS
WHERE DID SANGHEE'S SISTER GO??? SHE NEVER CAME BACK
Yo I was also rereading today and I thought the exact same thing. Why add a sister and then never show her again? Where was she on Sanghee's coming of age ceremonies as a kid and a teen?
UPDATE:
So after reading like the next two/three chapters, remember how when they were younger, Sanghee would control Hwanseong with chocolates? And a girl overheard and said she thought Sanghee was being rude? That girl was her half-sister. Sanghee also says she might've seen one when she was a baby. So the "sister" she's talking about is probably her half sister?