A realy good anime I hate ovas needs to be a series 20 ep minimum or if its good 10?

I hope to find a anime kinda like historys strongest deciple kenichi an anime mixed with fighting comedy romance and a little ecchi lol] loved this anime.also love anime about delinquits and street fighting hers an example tengou tenge,ikitousen all seasons and you get what im talking about so any series like this.