When he was dragged into the Black Lake by the Inferi, he reached consummation. His beloved family could finally escape the control of that madman...
However, when he turned into a remnant soul and wandered around the magic world day and night, he was heartbroken to see
The decline of the nobility, the death of his brother, the hopeless hope of his mother's portrait day after day, and
The eternally pure Blake, his family, withered and dilapidated, no longer glorious
So
Regulus Black
reborn
Vow to escape from Voldemort's control
Restore the glory of the Black family