Due to the "Magic Revolution" that occurred about 10 years ago, the world where mages have gained great power instead of swordsmen. Glenn, a skilled swordsman who was touted as the "Sword Saint", was also affected by this, and now he is in a state of being employed and somehow making ends meet. One day, Glenn is on his way home from work when he comes across a scene of young magician apprentices bullying an ugly lizard-like spirit.Glen, who saved the spirit with his once proud swordsmanship, named the lizard "Juju" and started living together.Then Glenn's life begins to change... This is the story of the former strongest swordsman Glenn, the spirit Juju who has the power of the highest class "Holy Dragon", and his companions.