Ronin Rat - Revenge of The Bat - Book 4

The duo finds the treasure cave only to discover that the treasure is not what they think it is. It is SHIKA’S fabled broken sword, and now the deadly bat samurai KOUMORI has arrived to claim it for his master! A battle ensues between WHISKERS and KOUMORI and is interrupted by an earthquake. MANEKI rescues WHISKERS from the earthquake and finally learns the tragic story of why WHISKERS became a samurai without a master.
INABA’S plot is now clear, and MANEKI wants to stop him from releasing the demon HAKASHIN who had once terrorised the world. However, WHISKERS is aware of the enormity of the task and the futility of challenging INABA.  He discourages MANEKI.