The ancient magus' bride

"After mistakenly putting Elias under a sleeping spell, Chise can't find a way to wake him up! She turns to Angie for help, and brews a potion meant to undo the spell--but the process is so exhausting, Chise ends up falling asleep herself. Upon entering a dream world, she crossed paths with the person she least expected: Cartaphilius. But something's off--the amoral alchemist seems to have lost his threatening edge"--Back cover.