MC won't leave the current world/die after he finishes his mission

ML's originally wealthy family has fallen, so he has to give up everything including college and his passion to keep on living and treating his sickly mother. MC's role is a person whom ML had helped one time on the way. Thus MC's role keeps on remembering this good deed which is why he wants to help ML no matter what. Though the original doesn't want his help to be noticed by the ML, so MC gonna change that.

ML is a heavenly fox - a royalty who doesn't want to go back to heaven/sky (?) cuz of his toxic family. So, to provide the little kits he had picked up (also fox demons, but not royalty like he is), he decided to try on a job to be an artist. Which is where MC gonna find him by chance and make him his new muse (MC has 2 different muses before this, which he dumped bc they caught on feeling and think MC gonna ease up on his control as they have been familiar for so long now). Btw ML here is very cute, he's a fox spirit to the Z. Loves pretty clothes, has a small animal instinct, and can't control his original form when he loses control of his emotions lol. Ofc, he also has a cool side (he's the gong after all), but most of the time, he's just a vain little fox who loves to cuddle and take care of MC in his original form (yes, you gonna be seeing an actual fox cooking and cleaning lmao).

This is quite interesting an arc. You see, before MC, there were already 98 different executors trying to solve this world and failed. What makes it difficult tho, turns out the protagonist of this world, AKA ML, remembers all the 98 times he had 'reincarnated' AKA every timeline that has already been done by those executors. This is the main reason ML here doesn't want to do anything, he had already seen them all, including the fact that his teacher would always be the executor/tasker. He can also hear the system-tasker chat after he has improved his power to some degree. So this makes MC's job a lot more difficult. His solution? he set his body (AKA the shizun body) to be injured, and the only way to heal it is by dual cultivation. Yep, MC said if ML not gonna level up, he's gonna directly feed the exp to him XD. As you already expected, there's gonna be some dubcon here and there (mostly at the beginning). Some of these would be when MC straight up r*ping the ML (sealing his ability to move) which ML doesn't really mind except being dumbfounded, and when ML has to give an 'emergency procedure' to the unconscious MC, which MC also doesn't mind (and even appreciate).