Masaki Kurosaki

was the mother of Ichigo Kurosaki who was killed trying to protect her son from Grand Fisher. The Grand Fisher used the forms of humans whom he had devoured (mostly women) to attract other humans with high spiritual energy. Ichigo, who at the time could not distinguish between ghosts and humans, saw Grand Fisher's lure and ran after it. Masaki, realizing this went after Ichigo and protected him from the Grand Fisher at the cost of her own life. According to Ichigo, Masaki was the center of the family and everything that went on with the family revolved around her. Due to this fact, Ichigo's family was greatly devastated of her loss.

They visit her grave every year, and that is the only day in the year Isshin smokes. The reason he smokes in front of her grave was because when they had first started dating, Masaki complimented him about how cool he looked while smoking. He also added that was the first and last time she complimented him about his appearance. Isshin hung up a large poster of her in his home, displaying the phrase "Mazaki forever".

According to Tatsuki Arisawa, Ichigo stopped crying every time he saw his mother. She claimed Ichigo had the most beautiful mother ever, and took it upon himself for her death. Isshin also thought it was his fault his wife died. He says this the reason being he couldn't get there in time to protect her from the Grand Fisher. When Ichigo asked him why nobody ever blamed him for his mother's death, Isshin explained to him that "he was the man the woman I fell in love with gave her life to save." He also added that when they meet each other again, if he ever had blamed Ichigo, Masaki wouldn't be able to forgive him.

Masaki Kurosaki reappears in the The Kasumiōji filler Crisis when Ichigo Kurosaki faces off Hanza Nukui. Hanza Nukei uses his Bakkōtō, Saiga to look into Ichigo's memories, and then tortures him with the memories of the death of his mother. Hanza makes it so she tries to choke Ichigo, making it so Ichigo can't harm her or fight back. Before Ichigo chokes to death, the pleasant memories with his mother comes up from deep within him. A twister of reiastu surrounds them. Ichigo then tells his mother how much everybody misses her, and he manages even without. Before she vanishes, she smiles as telling Ichigo that everything is alright.