Game of DxD: Redux

There was war and bloodshed. There was hatred, love, and madness. Time has been reset far too many times. The winds of change were calling, as Hyoudou Issei received the System, a forgotten being's gift. The incompetent pervert will become a ray of hope and peace, and the wretched Monarchs will fall a final time. [M for safety & harem. MC becomes OP gradually. AU, Solo Leveling.]