Xu Menghui feels like he's completely screwed, because he transmigrated into the world of Honkai Impact 3rd. He woke up to find himself sleeping on a park bench, with a thing called a System now inside him.
This damn System gave him templates for a bunch of Kamen Riders, but only on the condition that his memories be erased.
And so Xu Menghui, thinking he was Hojo Emu, beat the Herrscher of Corruption senseless in the Elysian Realm, mistaking her for a Bugster.
Or he thought he was Kiryu Sento or Dan Kuroto, and got into heated discussions at the Anti-Entropy Headquarters with a certain guy with a chicken-nest hairstyle and a red lobster.
When his memories returned, he saw a crowd of people looking ready to eat him alive, and Xu Menghui promptly ran for it.