How Aizen Grew Even Stronger in Muken Before TYBW | Bleach Lore (Patreon)

Hello!

When Aizen returns in TYBW, we discover that he's somehow managed to become even stronger than when he fought Ichigo! How is this possible? What does it mean for Aizen's power, and the journey that he took to get there? Let's find out!

Enjoy!