Gimai to Juumai Tokidoki Tonari no Onee-san

Dumped by my girlfriend, with a sprained right hand and defeated spirits, I came home to be received by a loving little stepsister, loli cousin and older girl next door. They said they'd take good care of me, but come on. Mio was way too young, Kana was a useless otaku and Saori was pregnant. But I was even more useless, and completely bedridden with no way to jack off... I was grateful for their efforts, but how could I ask them to take care of my lower half?