This is a world where the mobile game Arknights meets Heisei Kamen Rider.
The people of Terra who become Heisei Kamen Riders each have their own stories, shaped by their lives, ideals, and everything else.
Saria: "Those who disrupt order are the ones who rob people of their smiles. For everyone's smiles... Watch closely as I transform!"
Ch'en: "I became a Rider to protect others. I can protect the Riders, too!"
Red: "Grandma always said..." (points at the sky)
Blackhorn: "I'm here!"
W: "Now then, let's count your sins!"
Kal'tsit: "I will change my patients' fates."
Amiya: "I want to become a benevolent and merciful Demon King."
In the bustling city, monsters disguised as humans run rampant. In the wilderness, hungry beasts bare their fangs. And in the flow of time, sinners who seek to rewrite history show no regard for life.
Evil forces run rampant across Terra, and the world stands on the brink of disaster...
And the Riders, who can't escape their connection to all this...
Protagonist: "Damn it, this world might as well hurry up and be destroyed."
This is a story filled with love and hope (certainly).
