Zagan is feared by the masses as an evil sorcerer. Both socially awkward and foulmouthed, he spends his days studying sorcery while beating down any trespassers within his domain. One day he's invited to a dark auction, and what he finds there is an elven slave girl of peerless beauty, Nephy. Having fallen in love at first sight, Zagan uses up his entire fortune to purchase her, but being a poor conversationalist, he has no idea how to properly interact with her. Thus, the awkward cohabitation of a sorcerer who has no idea how to convey his love and his slave who yearns for her master but has no idea how to appeal to him begins.

 Zagan's group heads off to Nephy's hometown in order to learn more about high elves. However, when they arrive, they get trapped in a barrier that distorts time! While they're in there, Zagan's beloved bride Nephy is... turned into a little girl!? The precocious little Nephy is cute in her own right, but there's no way Zagan can just leave her be! Will Zagan and the others find the culprit behind Nephy's curse before it's too late?

After easily repelling the armored assailant who coveted the power of an Archdemon, Zagan finds she is actually a little girl, and a dragon! As punishment for attacking him, Zagan orders the little dragon to... help Nephy with her chores? Meanwhile, Chastille finds herself in trouble for refusing to take part in Zagan's subjugation. A new Archangel arrives in town, rumored to be after the apostate Chastille's life and looking to crown Zagan as his 500th kill.

Nephy learns of Zagan’s impending birthday from Alshiera, which is information that Zagan himself doesn’t even know. Seeing this as an opportunity, Nephy leads the charge in putting together a surprise party for him, but with her past experiences being what they are, she has no idea how birthdays are celebrated. Meanwhile, Zagan also learns from Orias that Nephy’s birthday is coming within the month, and the two Archdemons decide to mark that day as Nephteros’s birthday as well. Much like Nephy, however, Zagan is ignorant of how birthdays work as he tries to plan a surprise for her. The entire castle is in a celebratory mood, but dark clouds loom over the horizon. Zagan knows of a terrible problem haunting Nephteros that has to be addressed before any sort of celebration is an option, and he still has no idea how to resolve it. What’s more, after a month of relative peace and quiet, Shere Khan and Bifrons finally make their move.

After accepting Lilith's request for a larger bath, Zagan begins the construction of a grand bath in his castle to reward the services of his subordinates and provide a place of relaxation for Nephy and the other girls. Life in the castle is as peaceful and noisy as ever. However, Bifrons' evil schemes are advancing toward them, and the mysteries of what Alshiera has been fighting against for so long slowly begin to unravel.

When Oscar travels to the Magic Empire of Tuldar to break his curse, he discovers a girl named Tinasha sleeping in the castle and returns home with her. As it turns out, she not only possesses the overwhelming power required to lift the curse but is also next in line for the throne. Curiously, despite having never met Oscar before, she immediately harbors strong affections for him... "Would you please marry me?" "No. Where did that even come from?"

How to love your elf bride... when she's turned back into a little girl?! Zagan's group heads off to Nephy's hometown in order to learn more about high elves. However, when they arrive, they get trapped in a barrier that distorts time! While they're in there, Zagan's beloved bride Nephy is... turned into a little girl!? The precocious little Nephy is cute in her own right, but there's no way Zagan can just leave her be! Will Zagan and the others find the culprit behind Nephy's curse before it's too late?