Help please!!

I read this almost a year ago so I'm not sure if I remover a thing but all i can say was that I hella confused, and it wasn't a very happy ending. The thing about his cousin, the shady guy and all was left as it is....it is a shame really. I was kinda disappointed.

Remember*

being me, I've read it several times a while ago. i'll return to you tomorrow bcos i'm already sleepy right now (it's midnight in our time)

It's okay, Thank you. Just get back to me when you can.

so anyway, here's what's happening.

main guy (Xiao-wei) is an orphan who had bad blood with his uncle's wife but he gets along with his cousin fine. he gets kicked out of the house and he's fine with it anyway and while looking for somewhere to live, the people who offered him a ghostbusters job (w/c he rejected at first) suggested to be roomates and he found it convenient so he agreed. both on the housing suggestion and the supernatural extermination job. he's slowly developing feelings for feng (the long-haired guy) and his cousin who actually harbors an incestual unrequited love for MC starts getting all yandere over him. however, this feng is still not quite over with his missing former crush who happen to have the same name and similar face to Xiao-wei. which sucks. Eventually, it was all revealed that it was the other twin that is behind everything. Inciting their cousin, betraying everyone in the past. He is the dark version of the MC. Who actually likes mi shen (cousin) who likes Xiaowei, who likes feng, who likes Xiao (older twin)... lol.
Sad and frustrating love square of the main characters set in a supernatural theme.

That makes so much sense!! Thank you so much for your help!