And there came a day, a day unlike any other, when Earth's mightiest heroes found themselves united against a common threat! On that day, the Avengers were born, to fight the foes no single super hero could withstand!

Ichigo thought that he knew the world, that Soul Reapers and Hollows were all that the spiritual world had to offer. How wrong he was. Ichigo/Harem. Strong Ichigo in later chapters.