Light Novel/Volume 4

Volume 4 of was released in Japan on December 29th, 2017 by Hobby Japan. It was later picked up and officially translated in English by J-Novel Club on February 20th, 2019.

Summary
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?

Chapters

 * Prologue
 * Chapter 1: Our Family Has Grown, so It's Time to Visit My Bride's Home!
 * Chapter 2: Love the Girl Dear to You, and She Will Love You in Return!
 * Chapter 3: An Archdemon's Dilemma: How To Love Your Child Elf Bride
 * Chapter 4: They Say No Child Knows How Dear They Are to Their Parents, but Parents Also Don't Understand the Feelings of Their Children
 * Epilogue

Bonus Short Stories

 * A Show of Gratitude
 * Fish Pie Menace
 * Over stimulation
 * The Drunk Siren