Noda Kazuaki thought that getting the flashy pink Kamen Rider Decade belt would let him rule the world. But he never expected to lose all his cards and get beaten down again and again!
The only way to undo it is to enter the Gashapon System and draw a Rider belt:
"Thanks, Decade!" This is a secret phrase like "Open Sesame."
The Decade Gashapon System only activates when someone says it sincerely.
Draw a belt: Build! Drive! Ghost...
He searches for people best suited to the belts, only to discover they're all girls around him: a new teacher, his childhood friend, a genius gamer girl...
"So I'm supposed to start teaching girls to be Kamen Riders now?"
Noda Kazuaki was at a loss. And the first person he found who suited a belt was his new homeroom teacher...
This novel is all about Kamen Riders. It's also known as The Veteran Decade, Decade: The Godfather, and The Guide to Girlish Kamen Riders.