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.

 Nephy and Zagan have finally confessed their feelings to each other, but neither of them have any idea how to act like a normal couple. After getting some advice, Zagan finds out about a mysterious event know as a 'date,' and goes on a research trip in town where he coincidentally saves the blind therianthrope, Kuroka, a newly dispatched priest. At the same time, Nephteros discovers the truth of her origins and escapes to Zagan's territory while being pursued by Bifrons' chimera.

After getting too accustomed to the cozy life in Zagan's castle, Foll fears she will forget about her revenge and runs away from home. However, the young sorcerer is quickly discovered by the most dreadful of Archangels, Raphael.

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.

STRETCHING HER WINGS Dale is very protective of his adopted daughter, the magical demon Latina—maybe a little too protective. Realizing that she’s starting to grow up, Dale decides to take Latina with him on a journey to the royal capital. It’s the perfect chance for Latina to see the world outside her cozy little home, and maybe even use her magic skills to protect Dale, for a change.

 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 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.