and Nick's about the same age too. he's probably all like "since kaijins and humans are the same, i should be kaijin too! and there's a plus, i get superpower too!" they act just as gullible as the kids we see irl.
I loved the flashback, coz its really give a proper context and how it connected with the present time. But I understood why some people didn't like it even tho it serves the story overall. Its ok cuz u guys will get better understanding in the next ep. Anyway, another good reaction!
Honestly if you guys like how this series is structured, with swaping between the 70s and modern day, I think you guys would like Kamen Rider Kiva which does the same swap between 1986 and 2008