Ryan substitute stray reaper (soul reaper oc x highschool dxd harem)

There were always stories about the great war between the 3 factions (devil's, angles, fallen angles) but there was 1 faction who was stronger than most they were the soul reapers who helped the dead pass on to the afterlife.

while during the war they were all wiped out including 1 boy called ichigo kurosaki but what they didn't know was that he was turned into a sacred gear. a few thousand years later the gear has never been awakend until a boy called Ryan hosu.