User blog comment:B214/Volume 22 spoilers/@comment-95.90.227.198-20170206220903/@comment-31137559-20170208160259

Well something like Issei being Shiva's son or grandson would just shit on Issei's extraordinary growth. Most heroes are born from ordinary men. And plus we have Vali who is the great-grandson of Lucifer, all the main Hero Faction members except for Leonardo who are the descendants of heroes, Arthur and LeFay who are the descendants of King Arthur, Bikou who is the descendant of Sun Wukong, Akeno who is the daughter of one of the original Fallen Angel leaders, and many more. Why do you have to be the descendant of someone just to become powerful? Has anyone heard of 'zero to hero' or 'rags to riches'?