Reborn as the Supreme Rider: My Second Life in a Masked Hero World

When brilliant scientist Si Nan dies in a lab accident, a mysterious system offers him a second chance—in the world of Kamen Riders he's obsessed with! Armed with his encyclopedic knowledge of transformation devices and a beginner's gift pack, this socially withdrawn researcher must navigate a reality where masked heroes battle for justice. But there's more than monster-fighting ahead: a fateful encounter with a charismatic partner will challenge everything Si Nan thought he knew about connection, power, and what it means to truly live. A thrilling isekai adventure with intense romance at its…