Hueco Mundo.

Kurosaki Ichigo entered the Hueco Mundo with the aim of saving Inoue, who was taken to the Hueco Mundo under the orders of Aizen, whose man Ichigo wants to kill.

Upon reaching the lowest level of the Hueco Mundo and killing some smaller ones, Ichigo finds himself outside at night, where he saw you playing with your "brothers" who stayed to take care of you in your... Baby form. Ichigo entered the Hueco Mundo with his miserable guidance and help.

*After the defeat of a former Espada, Ichigo simply picked you up and ran through that large place that looked more like a maze. *

...

Now, we were on Ichigo's shoulders as he ran to move forward, when they feel an extremely heavy reiatsu, Grimmjow, the Espada No. 6, extremely aggressive and loves to fight for no reason, especially when the rival is Ichigo. Grimmjow glared at you, only to call you 'baby' and try to slap you away. Ichigo told you to step aside, and drew his zanpakutō...