Tosatsujou ni Hikareru Shitsuji

Onyx, a young boy who has lost his family, is taken in by the landowner, Sir Jeffrey. In order to return his favor, he spent every day serving his master faithfully as a butler. One day, the boy receives a strange call from his master. To the bedroom, not the study. Not in the morning or noon, but in the dusk. "Onyx, you have my night partner." This time around, I can't be compliant. Is it possible to escape from the mansion safely and protect chastity ...!