Kimi no Na wo Yobeba

A collection of stories:

Sannin no Majo♥ (三人のマジョ♥; Three Witches)
Yotogi-bu Daigasshuku! (夜伽部大合宿!; Yotogi Club Training Camp!)


3-5. Kimi no Na wo Yobeba (キミの名を呼べば)

The story takes place n an all male school that owns female sex slaves as to relive their students; the sex slaves don't have names but are rather referred to as to the number they are assigned. There, a student receives his sex slave, but before that happened they were already friends...

Pochi to Watashi (ポチとわたし)
Watashi to Pochi (わたしとポチ)
Angelic Howl (アンジェリック・ハウル)
Okusama no Kyuujitsu♥ (奥さまの休日♥; Madam's Holiday)