This Anime, OVA, you know what i mean is just okay it does not follow the manga's approach to hentai but it does relay the same story. It is sort of like just a quick way to introduce the main story and thats all everything else is in the manga but everything pans out much slower due to the fact it isnt 2 chapters like the OVA's 2 episodes. overall it is okay but its not very important my sugestion is if you think it sounds cool read the manga but be prepared for many sexual drawings.
^^PEACE^^