Review Detail of _Goku_Black_ in Ascending to Supremacy

in 30 years, the strength of less than 1 million in the world of Dragonball. where is becoming strong and getting new forms?it has an OP system but does not use it. He doesn't build his own life but helps others.skipping time and retelling a story where the main character just doesn't do anything for himself. He gets knowledge and powers that are useless and does not apply them. He's a stupid minor character who likes to watch the lives of others rather than live for himself.And the harem he wants. Lol. What does he do for the harem? leaves them unattended?Where is the skill located in multiple bodies with the same consciousness? where are the hints that he is always close to his women that he did not abandon them.......