The Main Tower is a prominent structure within the City Of The Rich Frog, serving as a key location for guests and officials. It features a second level with a single door for entry and no windows, indicating a secure internal chamber. The tower has an open upper level. The area around the tower is characterized by disturbances, including scratches and displaced tiles.
Guards conducted searches throughout the tower during a night of alarms, checking Guest Wing without explanation. Following a violent incident, Shiba Midori, an Emerald Magistrate, reported that attackers had used her as a weapon and tied up others, including the niece of Miya Tetsuya, the Imperial Miya Tetsuya. Miya Tetsuya declared a lockdown of the island, asserting that no one could leave or arrive until the culprits were found. Investigations revealed that the attackers had ransacked the Emerald Magistrate quarters and that a guard had been slain at Midori's door. Bayushi Monban examined the targeted room and discovered evidence of a roof entry, including scratches consistent with climbing tools and rope fibers.