High School DxD: The Children of the Four Great Seraphs.

This is a fanfic story of High School DxD, following the story of Seth Lightvale, the son of Archangel Michael, who happens to be the wielder of the Longinus; Heavenly Light, one of the original 14 Longinus, making him the possessor of the Solar Dragon, Aureus, one of the three Heavenly Dragons. He leads a team known as Team Light, consisting of best friends and honorary younger siblings, Elaina Lightvale, the daughter of Gabriel, Jason Lightvale, the son of Raphael, and Aiden Lightvale, the son of Uriel. The children of the Four Great Seraphs go on many adventures to protect their family and friends, as well as protecting innocent people from evil beings.