Review Detail of Unknown47 in The Author's POV

Started off great following the synopsis which I was interested in but following further on it got dark REAL quick, with MC realising he is being manipulated by a dark figure in the shadows who is able to change his memories and life through knowledge of the future (readers will know who im talking about), but instead of helping him he constantly breaks and craps all over both MCs while proudly acting as a wise sage controlling the MC to intentionally harm his friends until he eventually ends up killing one through the use of the antagonist and I couldn’t continue as the MC and anyone human wouldn’t be “motivated” through COMPLETELY senseless sacrifice, I don’t care if the author later reveals a secret plan through his death, the death was entirely preventable and pointless as the antagonist actually let the MC free after doing so