This is a set of volumes 1-27 of "Welcome to Demon School! Iruma-kun." Volumes 1-6 and 9-27 are first editions. Volume 7 is a 4th edition, and volume 8 is a reprint. Volumes 25, 26, and 27 are unopened. Volume 26 has a bonus. The condition is, in my subjective opinion, generally good. Please ask any other questions in the comments. I apologize for the incomplete set, but please consider it if you are interested.