[Tip Of My Tongue]

There was this manhwa I read ages ago (probably 15 years) that was still ongoing. It was a hilarious manhwa kinda similar to Need A Girl. The protagonist is a good for nothing high school student, but gets misunderstood to be a martial artist. He tries to keep the faćade going, and it somehow works. I have tried to find it for a long time but had no luck since I am missing most of the details.