All characters are over 18

A few years back on deviantart, Sleepy had other pics up, and people always asked the ages of the characters, especially that one with the blonde boy being gassed asleep on the train by the silver haired villainess. Sleepy has mentioned that the characters he draws are all either 18, or over, look at Freddie who is 18l, or Leopold who is over 18, the men in that universe just have a shorter stature, while all the women have more statuesque builds, taller, more voluptuous bodies.