 If you liked
Shijou Saikyou no Deshi Kenichi
|
 ...then you might like
Asu no Yoichi!
|
Both involves serious martial arts mixed with lighthearted comedy. While Asu no Yoichi is more harem oriented, Kenichi is much more martial art oriented.
Do you want to laugh? You should give Asu no Yoichi! a try. It's a really good anime and similar to History's Strongest Disciple Kenichi. It's funny, it is about martial arts and it has ecchi scenes. Unfortunately, it's short and it's figt scenes aren't as epic as Kenichi's.