Oscblade

This is by far one of my favorite manga's that I have ever read. Honestly, I wish there was more but at the same time I think the ending was great. 

The action is just fantastic, the mc shows growth even though he starts out op. The fight scenes cause to get hyped as you read them. In the carnage that the mc dishes out is just awesome. 

The characters are memorable with lots of character development not just with the mc. 

The bad guys or villains have defined reasons that make sense for why they are after the mc. This story is capable of doing this also because it partially uses some real-life stuff that happened in Korea. 

The romance is not really all that great but even though it's simple it's still better than twilight movies. 

Honestly, if you like martial arts stories with cultivation of ki then this is a must-read.