Hey hey sister (related products of this title)

The main character "Kusunoki Kokoshi" who is a short and baby-faced student in spite of his age、
She is always in charge of the maintenance of her cousin, Yoshiki Takase, and the dental doctor Amemiya Isari.、
I was pampered by the massage shop clerk "Nagaoka Rito", but I had been bullied、
In fact, it is discovered that Imari and Rito are trying to take away chastity by monopolizing Takashi.

In order to protect Yoshiki as a cousin, I Mari and Rito have started a fierce appeal to Takashi every day in order to make it their own ......

The battle for the main character by the naughty older sister who is strong of the push begins ....

歳の割に背が低く童顔な学生である主人公「楠国高司」は、
いつも従姉の「高鷲佳伽」や歯のメンテナンスを担当している歯科女医の「雨宮伊鞠」、
マッサージ店の店員「長岡璃燈」に甘やかされたり、イジられたりしていたが、
実は伊鞠と璃燈が高司を独占して貞操を奪おうそしている事が発覚する。

佳伽は従姉として守る為に、伊鞠と璃燈は自分だけのものにする為に毎日高司に猛アピールを開始してきて……。

押しの強いエッチなお姉さん達による主人公争奪合戦が始まる――。