Summoned Together (Highschool DXD x Male reader)

You stood with your brother in arms, well sister, your lover- your life. Your old world wasn't much different from the one you find yourself in now except for the overwhelming threat of dragon gods that could destroy all life; you and your childhood friend attempted to take them all down but were cut short at the final leg of the race. You woke up in a new world and a with a new mission that would hopefully reunite you with your old lover.