this is one of the reviews from novel updates "He had this gf that dumped him to get with rich kid in class, then some things happened and her life went to ****, she ended up as a hooker and then tried to kill him because she blames him for all her problems. Then of course she doesn't succeed, and MC not only not kills her, he also stops his friends from doing so, everyone thought she should be killed but nope, he wouldn't let that happen. Leave her be so that she one day tries to kill him again or maybe harm his friends and lovers. And of course, the girl starts training in this technique that's supposed to make her really strong. So yeah, I expect more bs like this in future chapters so I dropped it"