Light Novel/Volume 12

Volume 12 of is to be released in Japan on April 1st, 2021 by Hobby Japan.

Summary
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.

Chapters

 * Prologue
 * Chapter 1: My Bride's Birthday Is Far More Important Than the Fate of the World
 * Chapter 2: When Crybabies Attract, Everyone Else Has it Rough
 * Chapter 3: Some Things Change, But a Villain's Fate Is Set in Stone
 * Chapter 4: A Tea Party Between Devils and Angels Is the Very Picture of Hell
 * Epilogue