Unbalance x Unbalance is one of my favorites. It's a harem manga/manhwa but more realistic. Another positive side is that the scanlation group (kmts) release very frequently. The quality of the the releases are also great! So give it a try.
I've read a bit of the series and I enjoyed it a lot. I hope kmts keeps doing a good job scanlating it for us. It does seem to have a plot to it although it's a bit early in the story for me to guess where things are going.