So there is bl transmigration novel (bl) where mc transmigrated as ml's shixong I guess and the orginal owner hated ml but later when mc transmigrated he is somewhat alert around ml cuz ml also behave strange and later it was found that ml had some deal with higher god to meet with mc cuz they both know eachother in real world and has been raised in same orphanage and due to that deal both ml and mc transmigrated into that novel and that novel was written by ml himself... something like that....that story was quite complex