“Haesoo, it’s me, your brother, will you let me hit it again? <3”
hyung doesn't equal real/related brother in korea... I'm assuming you know that since you're reading manhwa. plain and simple it's NOT incest because they're not related, they're not step brothers currently, and they never thought of each other as actual brothers even when they were step brothers for 3 years. get better jokes
How does cain at all compare to yawhi lol, all he’s done so far is act nicer than normal to appeal to his crush while yawhi’s STILLLLL a dick who only hears what he wants
Ikrrr