Poppet Subslut 
Orgasm Roulette [EPUB ebook] 

Terri lives with his Mistress and their two friends. He has been kept in long-term chastity and is used by all members of the household as their submissive sexual toy and plaything. Each month Terri has a chance to be released from chastity and achieve an orgasm. However, before doing so he is set a series of tasks and challenges that he must complete that day to earn the right to have a possibility of release. Today is the day when Terri has the chance to earn an orgasm, but first he has to endure whatever torments and humiliations the others have planned for him. It is going to be quite a day!