Zankoku Hon'o

The Brutal Flame Tower was a defensive tower of Otosan Uchi near the Golden Sun Bay.

Fall of Otosan Uchi
In 1159 the tower was attacked by a giant oni from the water in the Fall of Otosan Uchi, and the alive defenders as Shinjo Monoko, Moto Yuhija, Shiba Keisai, and Matsu Onuri came to Otosan Uchi to join the defenders.