No transmigration, its own worldbuilding, and original settings. Some parts conflict with the original plot and canon, so don't read if you dislike that. Try not to overthink it.
Yu Siyang was orphaned at thirteen. By the time he graduated at eighteen, he was a shut-in standing less than 165 centimeters tall. He didn't get into college, but luckily his exceptional gaming skills let him take on plenty of jobs, so at least he never went hungry, even if he didn't eat well.
With gaming talent as formidable as his, it was only natural that plenty of people watching their screens would envy Yu Siyang. Then, one day, a strange man appeared and disrupted his relatively peaceful life. From that moment on, Kamen Rider Ex-Aid appeared in the city.
