I'll give the world, a love like that with you.

The village girl Alissa is invited by her childhood friend to participate in a demon king subjugation quest, following a proclamation from the royal castle. Accepting for the sake of the reward, she and Marie—using the magical power they once learned at a magic school—head toward the capital. As they struggle against a dark force powerful enough to crush an entire city, the two finally reach the demon king's domain. But what awaits them there is――. You're all I need. Though honestly, I would have preferred us both. This is a story of one girl's love.