Plot

The previous MC was humiliated beyond belief. To get revenge he summon an old soul which is our main character now. But in doing the cursed ritual he must sacrifice his soul. To make sure the summoned soul to take over his body to do his last request they must fulfill the request or the summon soul will be obliterated and never chance to be reincarnated/reborn again. The main character understand this and figure out that the previous MC wish his family dead. The curse ritual has it were the person doing the summoning would do harsh laceration/deep cuts on their body (pretty much they die from blood loss and on there last breath mention their desired wish our Previous MC didn’t that why MC now had to figure it out on his own) that why if the summon soul did not do the request they will not heal and continuously get weaker and weaker until their soul breaks. Our MC now knows he cannot leave until the wish (kill the main family) is fulfilled. Every kill made will heal one cut. When the deals done our MC can have body without any default and live how he wants.