I read it a long time ago and only remembered one arc. MC is a shou and travels through worlds trying to fufill the request of the previous hosts of the bodies he transmigrates into. He gets the message from the system and doesn't directly speak to the original hosts. The missions usually destroy the life of the main character of each story since he is sort of cannon foddder in the originals. The arc I remember goes like this: MC became the loyal soldier of ML who is a demonic sect leader. ML has a lover which is really beautifull who is the main character's lover. ML meets MC and has him as his servant but later on gives him a job making weapons for the sect because he thought that he can't betray his lover. ML then falls in love with MC and MC becomes his new obssesion rather than his lover who was spoiled an so on. ML's lover betrays him and takes some lotus which makes you live long and MC helps ML get it back. The arc continues but I only vageuly remember it. Please help. Thank you.