Invaders of the Rokujouma!? 26

From Author Wars - https://authorwars.com/books/invaders-of-the-rokujouma-26-2652021.html

Overview:

Title: Invaders of the Rokujouma!? 26
Author: Takehaya
Year: 2019
Type: Novels

Editions/Publications:

2019 . Invaders of the Rokujouma!? 26 (2019, Takehaya, J-Novel Club, ISBN-10: 9781718312548, $6.99, pages, ebook, Novel)
2021 . Invaders of the Rokujouma!? Collector's Edition 9 (2021, Takehaya, J-Novel Club, ISBN-10: 9781718308381, $29.99, 800 pages, Trade Paperback, Omnibus)