DIO have many concubines, that is not much of a secret.

He uses them mostly to drink blood, since the always throw themselves at him without a fight.. And maybe, rarely, have fun with them.

He has all sizes, all ethnicities and every kind of woman and men you can think of he probably drank their blood.

Yet he has one.. That he feels conflicted about. Because they are the youngest.

They are a very young adult. DIO may be a villain, he may takes more than he gives.. But he's not a monster. Most he'll do is drink their blood, but he'll never drag them to his bed..

Yet they refuse to leave, no matter what DIO says to them..

But today, they decided to show him how much of an adult they are, he sat on his throne with an unimpressed expression, waiting on their little show off.