I would definitely be ok with an expansion pack for the harem.

Volume 37 (Premium Edition): 3 Bonus Short Stories, Textless Color Illustrations Side: Maki Side: Shizuka Side: Yurika

The series itself is really cute, and these just take that to the power of 9000!

The complete paperback omnibus set is now available to preorder on Amazon and possibly other bookstores.
https://www.amazon.com/s?k=invaders+of+the+rokujouma&i=stripbooks&rh=n%3A283155%2Cp_n_feature_browse-bin%3A2656022011&s=date-desc-rank&dc&crid=1WIJP76WUNUPD&qid=1623082598&rnid=618072011&sprefix=Invaders+of+the+rok%2Cstripbooks%2C286&ref=sr_st_date-desc-rank

@myskaros Thank you. Redownloading.

Volume 35 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Side: Theiamillis Side: Ruthkania

Volume 34 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Side: Yurika Side: Shizuka

@BartzBB Just a guess on my part, but given that we just got the final two premium epubs released after months of waiting, I'm going to say "Soon. Very soon."

@Terabyte D'oh

For right now there is no official release date for Volume 34's start date.

Your patience is appreciated during this time.

As of right now there is no information on when it will go up for pre-order.

Just a observation but they are probably using all their spare resources on completing the Rokujouma Kickstarter, and then will focus on releasing the other volumes after the fulfillment or when it is close to being fulfilled.

Volume 31 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Side: Harumi Side: Maki

Volume 30 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Ace Detective Sanae, Part Three Side: Clariossa Side: Shizuka

Volume 29 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Ace Detective Sanae, Part Two Special Short Story

Volume 28 (Premium Edition): 1 Bonus Short Stories, Textless Color Illustrations Ace Detective Sanae, Part One

Volume 27 (Premium Edition): 1 Bonus Short Stories, Textless Color Illustrations Side: Ruthkania

Volume 26 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Side: Kiriha Side: Theiamillis

Volume 23 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Side: Shizuka Side: Nana Volume 24 (Premium Edition): 2 Bonus Short Stories, A Translated Postcard Celebrating the 10 Year Anniversary (text only) Textless Color Illustrations Side: Alunaya Side: Elfaria Special Postcard Volume 25 (Premium Edition): 2 Bonus Short Stories, Textless Color Illustrations Side: Sanae Side: Yurika