Break the Mirror's Boundary! Ichigo's Captivity

Plot:

Ichigo returns to the World of the Living, and he draws up a countermeasure at Kisuke Urahara's shop. According to Kisuke, there is a shortage of a kind of Reishi that is used as a raw material for merchandise at the shop. He says it is not a natural phenomenon, but that it is highly likely that someone is behind it all.