If you're reading this one, it's likely cause it has smut. I'll spare you the pain of reading 100+ chapters of this and tell you now that there's not much actual sex that happens. It remains at the level of an ecchi anime from 2010s, with MC groping and making out with the girls in different ecchi scenarios, but never goes past that point. When MC is actually about to have sex, he is obviously interrupted. I think there might be some sex scenes near the end, but I wasn't able to make it past 100 chapters.
As for the plot, MC gets a time-stopping system and uses it in a variety of different ways, from groping the school belle, to cheating in the national college entrance exams, to beating up gangsters. There's some development and romance between MC and the girls, but it's not that good and nothing you haven't read before. The girls are the usual trope-y 2D characters - the sweet neighbour big sister, the school belle, the school's English teacher, a female cop, the city's mayor (milf) and there might be more. Also, because of it's relatively high sexual content, it got banned at ch. 707 and got a forced ending. Lastly, MC is extremely dim-witted and has the intelligence of a 10 y/o despite being almost 18. And he barely improves in the 100 chapters I've read.
I'm giving it 2 ⭐ only because author had the balls to put ecchi content in a CN novel, knowing it'll get banned.
This is a decent novel and worth reading. MC is evil and shameless who will do anything to get stronger. He literally begs his enemy to spare his life and then licks their boots, only to stab them once they're defenseless. MC is a demonic blood cultivator in a righteous sect, so he has to hide his greatest strengths while in the sect, but he still manages to overpower and defeat the sect's chosen. The use of AI is also done well and MC uses it in a variety of different ways - from extrapolating further parts of broken cultivation techniques, to improving their efficiency and even letting the AI automatically absorb and circulate qi within his meridians. The computation power of the AI grows with MC's soul power.
Things I didn't like: MC acts quite insightful sometimes, but also acts stupidly many times. There is an arc where MC gets a strong energy source that he could use to skip a whole realm, but he instead uses it to create a mecha armor and tries to kill the girl who helped him start his cultivation at the beginning for no reason. She then calls her master's phantom image and MC stupidly goes all out in trying to defeat the phantom knowing full well that he's no match and completely depletes the energy source.
Also, there's some unnecessarily convoluted chapters that even the author recommends skipping. There are also some chapters where strong man A fights strong man B that feel like filler and can be skipped. It is clear that the author is a beginner and this is his first novel.
Overall, it's a 3.5/5 (currently at ch 380) but it can become a great novel depending on how author writes the later realms.
Don't listen to people saying MCs a simp below. It doesn't feel that way and all of it due to the vast difference in their cultivation levels. Even tho MC ingratiates himself to the FMC, it is meant to be funny and she doesn't take it seriously either. In fact, their conversations are quite enjoyable and will probably be half the reason you'll keep reading the series. The other half will be because of some of the side-characters and because they're written quite well for a webnovel atleast.