Responses
If the God tells him that he only has one wish maybe he would use it to actually get Chani in one way or another, be getting rid of Seokjun (?), on Chani or himself but to appeal to Chani maybe...
I actually want the God to dislike Muyeol too and help Seokjun by giving him two dicks to use with Chani lol

Ok. Muyeol is just plain disgusting but I admit that having as a enemy will be so dangerous... more than he already is. Not only he has the resources, he's vicious, intelligent, charismatic with sharp tongue and instincts. It's fun to read but I hate everything else about him. A sexual predator with power and who knows what he would do but not to Chani, but to Seokjun. He needs to get rid of him to have Chani and Muyeol effortlessly could create a loophole in his wish to the god. He knows Chani likes having this new body and still can do anal, so changing him is out of the question if he wants to make him happy so Seokjun's dick, his only value to Chani in his opinion, is in danger? And changing Chani's feelings too. Can the God create a situation where Chani gets to taste both dicks and choose which one he likes and settle it? Something crazy like that has to happen to him to realize he can't do with anyone except Seokjun anymore.
And the manager keeps bottling up the anger... if he gets together with Muyeol, hope he use all that frustration on him. Muyeol would enjoy it sadly.