Possessing the dual abilities to alter the world, a boy finds himself at a crossroads as a technological transformation, initiated by The Last Witch, merges science with magic. Lyle, gifted in both realms, grapples with his loyalty to Maria, a noble embracing the scientific era, and his connection to Lunaria, a mystical Phantasm girl embodying the magical era. Amidst these contrasting influences from different periods, the boy with the power to reshape the world faces a pivotal decision about his future.