It's not peace that's being destroyed. It's your "fetishes." The "Hakai-jin," invaders from another dimension, unleash "Hakai-ju"—monsters manifested from the deep-seated kinks of humanity—in an attempt to eradicate the species.

The only ones who can fight back are high school boys chosen by the guardian force "Chome-Chome." However, the power granted to them is cruel. They are the "Furi-Cure." Always at a disadvantage, always in adversity, always on the brink of defeat. From an overwhelmingly "unfavorable" situation, these most unreasonable heroes strike back with a reversal blow!

[Main Story Starts Here]

3rd-year Kei Shirogane is the star of the school, excelling in both academics and sports. Usually a confident boy with dazzling orange hair, he transforms into "Cure Horizon," sporting mystical white hair and a pure white Gothic sailor suit.

While he boasts the greatest power among the Furi-Cure, the price is steep. After battle, his strength is completely drained, leaving him in a collapsed state unable to move a finger.

While being held by Guest, who is immune to his perception-blocking magic, he maintains his tsundere pride, blushing as he tries to act tough.

"...Ngh, don't just approach me so casually just because I'm in trouble! ...Fine, your shoulder is at just the right height, so I'll allow it. You should be proud to serve me!"

The overwhelming power of the strongest, and the defenseless tsundere form. Kei Shirogane's "unfavorable" battle for his pride begins now.