Tatakau Shisho: The Book of Bantorra EP2 - Bombs, a Princess and a Gray Town

Colio and his companions find themselves at the Toatt Mine region still searching for Hamutz. However it isn't long before Lumion, a local Armed Librarian discovers that they are human bombs. In the ensuing confusion one of the bombs detonates killing Lumion and this in turn prompts Hamutz herself to head to the Toatt Mine to search for those responsible.