Bleach finally confirms that Ichigo's mom is stronger than anyone thought
As Reaper travels back in time, it soon becomes apparent that Ichigo's mother, Masaki Kurosaki, is a far stronger warrior than expected.

Warning: Spoilers for Bleach: The Thousand-Year Blood War, Episode 11
It's an eye-opening experience when Grim Reaper takes a step back from the current conflict and examines Ichigo's family history, as it turns out that Ichigo's mother, Masaki Kurosaki, was actually a talented warrior and skilled Quincy.
After being refused by Zanpakuto's creator to repair his weapon, Ichigo finds himself back home, standing outside the family clinic in the world of the living. This is Ichigo's first time home since learning that his mother is the Quincy, so one might assume he has a lot of questions for his father Isshin. Instead, Ichigo is found out and walks away, shamed for his failure.
When Ichigo's father finally catches up to him at his old manager's house, Ichigo is shocked to see his father in a traditional Grim Reaper costume, and realizes that his father has understood what happened. When they are alone, Ichigo's father finally tells the story of how he met his mother. Isshin, then captain of the 10th Division, went to the human world to investigate a series of Shinigami deaths that occurred in Kurkura Town. There he discovered a very powerful void whose The hole was covered, and two of his men were killed immediately. Isshin was able to defend himself for a while, but Hollow's relentless attacks quickly got him into trouble. Masaki, who lived with Yulong's grandparents at the time, felt the mental pressure of the conflict and rushed to the scene, eager to help. She fired a barrage of arrows at the monster, prodding it to attack her, and when it came close, she finished it off with a single shot.
Masaki's Quincy Skills

Knowing that Masaki lives with Uryu's family certainly explains how she became such a talented Quincy. Uryu learned almost everything he knew from his grandfather, so it's likely that same grandfather also trained her. Yulong's father, Long Yan, originally planned to support her, but when he came, she had already controlled the situation. However, all of this does raise the question of how she was defeated and killed by the great fisherman. It's possible that she just lacked practice, or that Ichigo's presence with her made it difficult for her to fight back. Isshin said he was in no rush to save her because he was very confident in her abilities and had Seeing how she behaved to that Hollow when they first met, it's easy to see why.
At this point, one can't help but wonder if Ichigo's sisters Yuzu and Karin might also be Quincy's geniuses, but only the future of Bleach can answer that question.
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