On the planet Seken people have one certainty: no matter how long you live, you won’t die of old age. For Matsuru, a young man, life was nothing more than getting up, working on the fields and getting back to bed. But when Matsuru finds a mysterious girl who cannot speak or even think, he realises that his normal life is gone forever. After all, on this medieval planet there exists one more rule: magic attracts magic… and it turns out this strange girl has more magic than anyone has ever seen!