Writing Quality: 5 Stars
When I started, I thought it was gonna be a cringe bullying plot with Chisa and Bakugo bullying him out of being a hero, but oh my god I was wrong. It blew me out of the park of how good the prologue was. The conflict and everything was amazing, and how he was inspired by Tokusatsu IS PEAK. Very good beginning, and I am HOOKED.
Story Development: 5 Stars
The way this story is developing is so good, especially with the introduction of Izuku being a Kamen Rider and defeating his first enemy like no issue, just like how every rider is introduced in the show. It's like watching the show, but you are reading it instead. Very good development of Izuku from being inspired by his dad and I can't wait for more.
Character Design: 5 Star
I love the design of the Kamen Rider Suit and Chisa very friendly and the suit just blew me out of the park. It looks so good, and I assume the MHA is the same and I like how you described the monster as Imajin. Which is Demon with the Majin and the way you describe them is perfect.
Updating Stability: 5 Stars.
Do not care about that right now. I am very patient and this story is worth waiting for.
World Background: 5 Stars
My hero academia and Kamen Rider. If you have read MHA then you should be fine with the World Background as it's part of the fic, the Kamen Rider part is if you are completely new to the genre, I think this novel is a good place to start researching and I would recommend you to start nice and slow with Kamen Rider Kuuga.
Summary:
Keep going I like how the story is being written I wish we have more of him developing the rider system. Other than that this is by far the best Rider Fic I read besides a RWBY one.