Bipolar Wheel·throne of War

As a mercenary who died on the battlefield, Fanka was summoned to the new world by Valkyrie. And he was ordered to train a seemingly thin girl to become a swordsman. This task should be impossible to achieve, but the reward was so attractive to him. But for what purpose does the goddess summon herself? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.