A Reincarnated Witch Spells Doom, Vol. 4 (Volume 4) (A Reincarnated Witch Spells Doom, 4)

Having been summoned by the "Supreme Ruler" Isaac, who subjugated the fire dragons, Sena heads to the neighboring Phondona Empire along with Keith. There, they see the fire dragon king bound by magic chains. Sena, enraged at Isaac for manipulating the dragon and provoking her for her Caller powers, suddenly lets loose explosive magic!