DxD

Kuoh Academy, Dormitory Room

Shirou Emiya sat on the edge of his bed, staring at the ceiling. Outside, the city lights twinkled in the distance.

When they arrived in this world, state of humanity had been disgusting.

Despite the existence of Sacred gear system created by none other than Biblical God to protect and strengthen humanity, it had been no better than cattle.

Raised and exploited by supernatural factions. Devils, Divine Spirits, vampires and fallen angels.

Chaldea's first step was to form alliances with the heaven, which they agreed after a show of power and existence of multiple saints (and even the Divine scripture: Triten, the theoretical prove of God's love had come out during negotiation) in Chaldea.

Chaldea's science team dealt with repair and improving the heavenly system, while a strike team dealt with hidden threats.

Numerous reincarnated devils have been freed from their master...

A knock at the door interupted his thoughts.

"Come in," Shirou said.