Houkago no Yuutousei

Episode 1

Paradise Found
Our protagonist is a helper at his uncle's inn on an island. On this island being in a relationship is frowned upon, but the girls still have lustful tendencies... Two honor students decide that they are going to use our protagonist as an outlet for their sexual frustration! Anytime the girls wanted sex they got it. These were supposed to be wholesome and clean honor students, not sex crazed monsters!

Episode 2

Yumisaka-san no Baai
We were like any other young couple, having ordinary sex almost every day. Until one day she asked me to film her while she gave me head, she was so much more erotic and sexy! Soon we started filming in public, and doing livestreams of us having crazy sex... What did I get myself into..?

Seta-san no Baai
I went to go hang out with my friend at her house but by chance she ended up not being there, she said I could hang out and wait for her... I've been hooking up with random guys from school and online and it just isn't enough... While I was there her younger brother showed up and asked what I was doing here... and being the good friend that I am, I made sure to take very special care of her brother... Eventually I found myself addicted to his body and started coming over to have my way with him instead of to see my friend...what have I become...

Episode 3

Shinsou no Koukishin
Moriyama-san was instantly in love when he first saw Izumi Yurako, who has recently been transferred to the city. Having confessed and was somehow miraculously accepted by Yurako, the two start their relationship in many physical ways. Unknown to Moriyama, Izumi is quite the nympho but goes along with her dangerous advances...

Yuutousei ni Hitsuyou na Jugyou
Mikage Hinamachi grew up in a rich household and attends a private girls-only's school in the city. In this school, all the girls are sexually suppressed since there are no boys around. Even if they want to have erotic encounters, there are certain dangers with paid dating and random guys so Hinamachi-san decided to hire a tutor for ecchi purposes instead!

(Source: hanime.tv)