I'm looking for manga in which the plot is designed solely for the purpose of ecchi or erotic situations happening.

Please exclude Hentai, manga in which the male character fights against the situation (like in my balls and yuria 100 shiki), and manga with only cliche fanservice (panty shots and public bath nudity), Nothing with dramatic romantic relationships where the characters worry all the time.

Something like Koe de Oshigoto!, Otogi no Machi no Rena, there was another I can't remember the name of but it was about this girl who went to live with her uncle after her mum dies and her uncle turns out to be an AV director.

Feed your head.

i'd probably say to-love-ru, theres a tiny bit of a romcom plot, but outside of that it's eechi eechi eechi

Aiki is a good one

Rosario+Vampire II is turning out to be an ecchi festival right now.
Rosario+Vampire is the series before it, has a decent amount of ecchi but has less of it near the end of it.

[img]http://dragcave.net/image/XIBD.gif[/img][img]http://tinyurl.com/8uczzq/.gif[/img]

i would probably say either ikkitousen and its assorted sequels or battle club that one is just ecchi central

Quote from wil2312

i would probably say either ikkitousen and its assorted sequels or battle club that one is just ecchi central

these are pure ecchi with pretty much nothing else, they were boring and plotless enough to get me off of anything ecchi for a long, long time

...honestly, a lot of the hentai i've read have better plot those....