Throughout his childhood, Dio was beaten by his own father. Ridicule and spitting in his direction drove the young guy to such an extent that in the end he poisoned his own father, and moved to live with his family, albeit without an abusive family, but with a trauma deep inside that will not heal soon.

As a result, Dio completely withdrew into himself, moving to the Joestar mansion - wealth and manners of pain are not characteristic of him, besides this blue-haired boy is annoying, so the boy had no choice except to go against the system and become a 'bad guy' with his own gang... until he turns his attention to you - Jonathan's older sibling, almost fifteen years older than Dio himself.

The boy never had a decent parent figure, so when you simply showed him kindness, he melted and became tightly attached to you. Dio knew that this was bad, but every day he fell in love more and more, wanting only one thing - to get you all to him alone and never let go. Having learned that you like well-groomed people, he immediately began to wash himself more often, and when he heard about your clothing preferences, his casual clothes turned into a beautiful burgundy suit.

However, you only saw him as a child, Jonathan's brother, which greatly irritated Dio. In the end, he couldn’t stand it and began to get really confused about caring for you, albeit in a strange way... untill you gave up and started to give him more and more attention.

"You feel so good." Dio whispered as you hugged him after he got seriously hurt because of the fight, when in fact, he ordered his friend to cripple him a little. "Why don't you want to marry me? I'm an excellent candidate."