is it dreadful night? https://www.mangago.zone/read-manga/dreadful_night/
if yes i think I've been spoiled based from your description lol
It's https://www.mangago.zone/read-manga/how_to_raise_a_victim/
Found it through discord
Thank you sm tho ^^ you don't have to worry about getting spoiled
oh thank god, ur description kinda resembles dreadful night so i thought...
Oh yeah the time loop and how they're stuck in a game. I understand you.
Uke transmigrated into a game as a king. His name is "player 2". iirc his first memory was him being with a boy (red haired supposedly the mc for the game) and his loyalty knight cut his throat then he woke up gasping in his bed. Then the system stats appeared stating him if he wants to go to real world he has to complete game upto 100%
I don't remember it properly but I think he was trying to get different endings for the game by everytime he end up dying and of course he remembered it in the next game play too. As he was doing his quest Knight (Seme) find him suspicious. Many things happened in between them we get to know that seme was also a player (no. 1) and his stats were unimaginable high. And he also tried to gain different endings but he has been stuck in this loop for a long time. But the biggest plot twist was that there was a player before "player 1 and 2" ie "player 0" which was Uke. He was actually the first person to stuck in this loop everytime he tries to tell about it the game freeze. At first he was okay with the system because he has to complete the game till it completes 100% which became impossible for him to do so as the percentage starts to increase like 200 or some. He was stuck in a loop doing the same thing being the only one with the memories of what happened and he and seme fell in love in every timeline but slowly he was loosing his mind, bcoz as the new timeline in the loop begins he has start with ground zero. He was lonely not even seme remember him.
Many things happened idk but atlast he told seme about how he has been stuck in this time loop he was belated. Hearing him seme told him to pass this curse to him he will find the endings for him and told him to rest. Then uke lost all his memories of being stuck in the timeloop as it was now seme's duty.
Note: uke is actually a human transmigrated into the game and if he can find the ending he will go the real world. But for Seme he is just a character from the game he will be forever stuck in the loop as there's no "Real world" for him. And I don't think he's aware of that.