-This is for sure a masterpiece vanilla. I don't have nothing to complain about it.
No NTR, no rape, no gangbang, no monsters, no torture, no violence, no forced sex, no old men, no creepy guys, no blackmail, no jealously, no cheating, no prostitution.
Still, this hentai is an awesome example of a hentai that shows that it isn't necessary to have rape, gangbang and all those stuff to have your intense and exciting hentai.
-This hentai has 2 episodes, each one containing 2 shorts (ordinary/natural yet interesting and pretty good to see) stories/situations which favors the build up of a climax, spicing up things.
I think that these (ordinay/natural) stories/situations are a relevant thing for this hentai, so I'll refrain myself from telling them to you, so you do not lose expectations when watching. I mean, watching something knowing already what is it like may decrease your enjoyment.
-The characters are from a same school. We have 4 boys (none of them are douchebag; each boy for a part of the episodes) and 5 girls. I really liked both boys and girls. They have natural reactions and behave toward a situation. The girls are still the key factors for your entertainment ;) The characters do not DIRECTLY intervenes in each others relationships.
-Art and animation: It's Pink Pineapple at its best. They didn't drop their quality in this hentai. So, if you already know Pink Pineapple you'll know what is waiting for you. If you don't, check it out with your own eyes ;) Personally, I really like it.
-Sound: The girls seiyuus are great. Nothing to complain. You'll hear from strong voices to the cute ones. The boys seiyuus are good as well, they also moan. They're not like those guys from some hentais that are mute while having sex. Both moans are on point.
-Enjoyment: Along with some others, this hentai is one of the best hentais I ever seen. So now you can guess how was my enjoyment... ;D