Can someone explain this luck thing and Jaieu’s illness? I’m so confused

i think it means tae gives jae luck but if tae dies then jae also dies. so if tae feels pain then so does jae. so that’s the cost of jae having luck is he will die when tae dies

So does that mean when Tae gets his ass pounded by Ilay, Jae can feel the fantom pains in his asshole?

the real question we need answers to