Kyodai ai no Dai Tenshi

Shiki and his friends are just your average, regular teens...at least, that's what they were, up until the angel Gabriel appeared to them and awakened the powers of the Five Archangels within them. Now, they hunt Demons, keep the Gateways to Hell sealed, and prepare for the impending doom of the Apocalypse. Welcome to the age of the Brotherhood Archangel!