[Tateyoko Issen (Shinagawa Mikuzu)] Hidoimeniau Otokonokotachi vol.1

A little sister's hypnosis strips her big brothers of everything human, leaving them as naked, collared pets who pant and beg shamelessly at her feet. One year later she owns them completely, walking her leashed boys with tails nestled in place and promising to care for her broken pets for the rest of their lives. Around that core torment, the collection rounds out its parade of terrible fates: a cocky crossdresser abducted and remodeled with a big cock, and a bound captive in a skintight bodysuit milked past the point of no return.