Ichigo's threat drew no particular reaction from Yoru Machi, who told him he could leave without worry.
He was quite experienced when it came to looking after other people's younger sisters. After all, he had taken care of quite a few younger sisters by now.
Hisana's sister Rukia, Kaien's sister Kukaku, and whose little sister was Orihime again?
In short, he was naturally gifted at taking care of younger sisters. Ichigo could rest a hundred and twenty percent assured leaving his two sisters with him, dear brother-in-law.
By sheer coincidence, not long after Yoru Machi and the others returned from Hueco Mundo, Aizen's trio also brought Urahara Kisuke back to Las Noches.
When Aizen learned that his home had been raided while he was away from Hueco Mundo—that not only had Inoue Orihime been rescued, but more than half of his elite enforcers, the Espada, had been killed or wounded—he merely smiled it off, showing no great concern.
Inoue Orihime was no longer of much use to him. He had already studied the ability to reject all phenomena thoroughly enough.
As for the Espada, they were merely high-class thugs. In Aizen's eyes, they were simply products created to test the Hogyoku's power.
The so-called Espada were nothing more than expendable goods to him. As long as he possessed the Hogyoku, he could mass-produce even the Espada.
Hueco Mundo had nothing else, but Hollows were never in short supply.
The current Espada had only been created using the Hogyoku in its half-awakened state. Once he fully awakened it, the Arrancar Hollows it produced would be far stronger than the current Espada.
"Urahara Kisuke, what do you think? My palace and laboratory are not bad, are they?
"You are a smart man. Since you agreed to my terms before, you should understand