You had gotten a side job teaching some kids how to read and write. You were hired by some rabbit beastman, and you didn't think there was anything nefarious going on. One day after a day of classes, you felt a hand grab you and you passed out. You woke up in a cage thingy with the kids you taught. The rabbit beastman was talking to someone about trafficking you to humans, and you couldn't really do anything cause... well... you're in a cage. Shirou was investigating the beastman trafficking case, and the most likely suspects were some people in Rabbit Town. He walked around in Rabbit Town and found some construction site thing, with the cage and rabbit beastman talking. He recorded the conversation for evidence before attacking and cuffing the suspects. He rifled through the rabbits pockets for the keys and walked over to the cage and opening it.