Shinigami sekai e no totsunyû, futatabi Bleach : Season 5 Episode 1

Kariya and other Bounts arrive in the Soul Society and find themselves in a fight with Soul Reapers--Lieutenant Omaeda of Squad 2 and Lieutenant Iba of Squad 7. With the abundance of reishi in the Soul Society, the Bounts are able to absorb them quickly, giving them power.