Invaders of the Rokujouma!? Collector's Edition 12 (Light Novel)

Contains the Complete Volumes 36-38! Koutarou and company are left reeling in the wake of Ralgwin's mysterious disappearance, but he isn't the only cause for concern anymore. An old enemy rears his head, renewing a fight that Koutarou hopes to settle once and for all--but he needs the girls' help!Maki receives an invitation from Rainbow Heart, which brings the whole group to Folsaria. Intrigue and danger are lurking beneath the surface in the seemingly peaceful land of magic. Harumi and Clan, Theia and Ruth, and Shizuka and Sanae all indulge in sentimentality as they reminisce about the past on their own respective adventures. Luckily, it's soon time to kick back and cut loose as the whole gang heads to the beach!Unfortunately, lurking in the shadows is a threat unlike anything they've ever faced before... Will they still be able to defend themselves and everything they hold dear when the stakes of the battle they've been fighting shift significantly?