Here's my review ( kinda has little spoilers ahead but not too much):
So, where should I start? yeah. If you like Melee fights, Harem, and other stuff, then this is for you! Although it may sound cool and all, it's just that. apparently no gun fights, generic action stunts, and the isekai thing is only there to make it more appealing. it's like the everyday generic modern cultivation manhwa, except of course removing the whole cultivation thing. There's no character development and he's still in this wild goose chase to avenge his own death and his team as well. pretty bad, but straightforward. It's just nonsense as to why Sharlan is still alive. 2 things to add. Like I said earlier, lots of knife fights, Martial Arts; and this random ability that makes him go berserk every time he looks like he's losing, which hasn't been explained since 50 chapters or so.