My School Beauty Ex-Girlfriend Is Actually an Accel Cop

Chen Yu transmigrates to another world overrun by monsters and awakens a god-tier sign-in System. He keeps a low profile and signs in for ten years, steadily building up his strength.

This world is home to all kinds of monsters, but it also has Kamen Riders who can transform. The Kamen Riders have even founded a protection organization dedicated to keeping human cities safe.

When monsters attack, Chen Yu is stunned to discover that Kamen Rider Accel, the one protecting his city, is his beautiful former classmate, with whom he once had a relationship!

When an unprecedented monster army launches an attack, the Kamen Rider organization suffers a devastating blow, and the monsters move to seize the city. His beautiful former classmate risks her life to protect Chen Yu.

Watching her, Chen Yu realizes he can no longer stay hidden. He silently takes out the Ohma Zi-O Ridewatch.

“Don't worry. Your king is back!”

“Henshin!”