Rebirth Moon Divergence

Ires and his father, Leglight, are traveling merchants. While near Gramnoa, they encounter Yuan, a skilled tempest. Mistaking them for thieves, Yuan attacks. Leglight uses a mystical weapon to repel him, but is then engulfed by a black light, leaving behind the weapon, a device, and a note instructing Ires to seek someone named Oldman in Gramnoa. To find his father, Ires travels to Gramnoa.