In the Empire of Thorn, there's a saying that the empress can't birth a child. Because of this, many Kings and Emperor doesn't pursue her. She is nickname Baby killer in private in regard to the fact that all of her attempt at birthing a child led to one result, death.
Toshiro and the other Captains shielded themselves from the shockwaves of wind, their arms bent in front of their faces. Fortunately for the weaker Shinigami, every single one had heeded Shunsui and Jushiro's orders to retreat. Therefore, the only Shinigami left in the area to face off against Barragan were Toshiro, Jushiro, and Shunsui.