What if Ophis had decided that the only way to defeat Great Red was to have a child? OCxVali, Fem-Vali, Strong, OP, High School DxD

Valedrah Gremory, the missing son of Sirzechs Lucifer and Grayfia Lucifuge, Born with a human-like power, come back after 16 years of absence. But this time, he is different. Very Strong, Very OP High School DxD