Gakuen Basara: Samurai High School
Clash in the Inland Sea of Seto! Fugaku, the Great Fire-Belching Fortress of the Sea!
S1 E13:
During the march to war against the Demon Lord: When Keiji visits Chosokabe and Mori to persuade them to join the alliance, Oda's minions arrive to issue a very serious threat.