The Town That Disappeared Monster Farm: Enbanseki no himitsu : Season 2 Episode 34

Naga sends his most powerful warrior, Bajarl, to destroy Genki and the others. Bajarl traps them in his jar, and only Holly and Mocchi escape. Holly then stumbles onto a ghost town that was wiped out by Bajarl. Holly reads the mayor's diary, realizing that the mayor rigged a huge rock formation above the town with explosives. She blows up the rock, trapping Bajarl and saving her friends.