The first episode is about a high school girl named Nonoka who goes over to the house of her new male "acquaintance." There, she meets the boy's older brother named Ryutaro who is actually the protagonist of this episode rather than his brother. When his younger brother leaves for more than half an hour to go buy a movie to see with Nonoka, Ryutaro is left alone with this tsundere girl. Of course, being a hentai, things happen and Ryutaro's younger brother never gets to watch the movie he buys with Nonoka (poor guy). In case you're wondering, I would not consider this NTR. Nonoka was never involved with Ryutaro's younger brother and really didn't seem to care about him at all (just Ryutaro).
The second episode is about Makoto and his step-sister Misaki (who is about as tsundere as you can get). Misaki secretly has feelings for Makoto and one day is accidentally caught by him while masturbating in his room. Despite Misaki being an extreme tsundere, they finally both convey their feelings to each and have sex.
Personally, I enjoyed the first episode much more than the second. I liked Nonoka's character design and personality better than Misaki's, the little bit of story there was felt more original, the sex scenes were arranged better, and the ending felt more satisfying (considering that this is still airing, they might go back to the stories [just guessing looking at the synopsis of the manga] so it could lead to later episodes being better as well). As for the sound, I thought Misaki's moaning sounded kind of annoying while I enjoyed Nonoka's more. The rest of the background music is just there for background sounds and nothing more in both episodes.
This is a good hentai, but without the first episode I would not be giving it any praise at all. The second episode just had barely anything that separated it from every other hentai involving a tsundere or big breasted girl. Also, Misaki's huge, blue twintails just look stupid in my opinion (being blunt about it is the only way I can phrase it). The first episode (despite only being a little above average) just does everything the second episode does better and adds even more onto that.
