Complex sentence: When Usagi finds them, there is a crime wave going on, and the magistrate is ordering his yoriki (police chief) to find the culprit; unfortunately, yoriki Masada has a gambling problem and is in over his head in debt to the local crooks.
Split into simpler sentences: When Usagi finds them, there was a crime wave going on, and the magistrate was ordering his yoriki (police chief) to find the culprit. Unfortunately, yoriki Masada had a gambling problem and was in over his head in debt to the local crooks.