Dion Hayes,
His half-brother, born from his father's mistress.
Dante had never had much of an impression of his half-brother, much less of his childhood with him. Even when the young boy and his mother had stolen his father's attention from himself and the late duchess, his mother, Dante still never had an impression of his half-brother.
Sure, his precious family had been broken by the appearance of the mistress and her child, but Dante had been assured with the presence of his own mother.
However, that could not be said after her death.
If Dante were to be more honest to himself, when his half-brother had suddenly disappeared, his heart back then was a bit relieved.
Though he didn't have an impression of his half-brother did not mean that he was completely unaffected.