GrimReaper's manga / #Past play big role(2)

31 read when it's completed It's interesting but hard to catch on the plot Mc(mountain God/dies then reincarnated) Red Demon(stuck in Mc dream/amnesia-new Mc & "died") Black hair Senior(lived for thousand years to meet the Mauntain God/A"shell" + the evil force is inside him/wants to devour or took over his body Red Demon cuz he's a shell without a soul) Red Demon & Senior ARE/WERE the same person??!

31 Ml used to people abandoning him & Mc did also?/thinks Mc is acting that he's amnesiac/find out about his memories And attempted suixee- ml took him to his house