When issei body was destroyed due to samael's poison, great red comes and save him and offers him a chance to get stronger by sending him to another world to train see how issei alters the timeline of against the gods

[Rushed Ending] All legends and hero have a beginning. Some start as nobles or commoners. Issei, however, started in the worst way possible – as a slave. However, he will reach a level that no one else has ever reached. He will reach the very peak of martial arts, and become the most powerful being in existence. This is his story, and how he rose to prominence.

[Rushed Ending] Sword in hand, a young man will shake the world, and his name will forever be engraved in the annals of history. In his quest against the Heavens, he will stop at nothing.