Death's Favorite Warlock

It's the first four words Lars usually wakes up to every morning as the voice in his head nags him, telling him she's just giving him a "quest" that will help him "level". But even if he wanted to do it, he can't. They're cultivators; beings with ancestral bloodlines that have powers he could only dream of and that may as well be gods while he is stuck as a puny human. Even if he could kill them, the people who bullied him, beat him, treated him like a punch-bag pariah for being the "tailless worthless human" that he was to them, he wouldn't. It just wasn't in Lars's nature.  That is, until a vicious group of murderous psychopaths called a "sect" descend on his village. The vicious group brutally kills everyone he's known his entire life, taking a select few with them as slaves. Lars must now trust he isn't going insane and find a way to complete the voice's quests and level up, so that he can save his mother from her cruel and heartless captors.  Death's Favorite Warlock is a cultivation themed LitRPG adventure series.