Yes lol! Haesong gets really sweet with the MC after they clear the misunderstanding. He’s always worried about him, especially since the MC gets hurt a lot and haesong ability with his fire. Changho, on the other hand, is super possessive and kind of obsessive too, but it doesn’t really feel like love. It’s more like curiosity and fascination. Like, he wants to figure out what the MC is, since he’s clearly not like other humans. But he does a lot of like red flag ml thing
A small spoilers but when mc was badly injured and asked changho to save him which he did. Changho made an contract saying he transfers the righ ts to his entire body to Kang Changho and when entering the gate voluntarily kim Kiryeo must first report this to Kang Changho as well as leaving the country. Kang Changho is also obligated to accompany the dungeon 2.

As a novel reader I’m honestly surprised that a lot of people ship the MC with Haseong instead of Changho in like the bl community if u know what i mean. To be fair, Changho is a really complex character, and Haseong does grow on you over time like he even turns into a bit of a puppy lol. Especially that one scene where he pulled a total kdrama Goblin moment with the umbrella and asking the MC to stay at his place lol.
Also yall are gonna either love or hate Changho bc he is annoying in so many way but he also very interesting