The two young men, so very close in age, were enslaved when their father went bankrupt – they were just in that awkward gap where they were old enough to be slaves and not yet old enough to count as being independently free, and so were considered part of their father’s assets.
Fortunately the two brothers had grown up very close, always sharing a bedroom, and so were used to being naked together. And they had heard each other masturbating at night, although they had not had sex, both preferring the succession of girlfriends who were attracted to their strong, lithe bodies and nice cocks.
This image is from part of the training they are undergoing before sale – they are required to get used to each other completely, and shortly will be required to masturbate each other, before moving on to learn how to suck and fuck so that they put on a good “show”. Patrons expect to pay high prices for family groups, and want them to be fully skilled in all the arts of sex.
Source: Boys Nuts tumblr