In Genshin Impact: The Dark Kamen Rider Decade

What exactly did Du Cheng, the Dark Kamen Rider Decade, see through his eyes?

Eula: Du Cheng? He's my enemy.

Eula: The grudge between us couldn't be settled even if we spent ten days and ten nights on it.

Eula: Before that, whether it's ten years, twenty years, or even further into the future, I will never forget him.

Klee: Big Brother Du Cheng is a good person!

Klee: We study bombs together! We go fish-blasting together! We get sent to solitary confinement together!

Klee: And there's more! Last time, Big Brother Du Cheng and I caught a huge lizard with strange markings. It scared Acting Grand Master Jean and everyone in Mondstadt half to death!

Jean: Du Cheng...

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.