All videos have been authorized by their creators, and I have kept all relevant evidence.

The earliest crossover videos combining Zenless Zone Zero and Wuthering Waves (including male characters) were published by the user "siggg" on June 5, predating the posts from "pop up". This user also engaged extensively in stealing and reposting crossover videos. The account was eventually banned after original creators filed complaints over unauthorized use of their works. The account "jnbhmmlk" was the first to launch personal attacks. The relevant videos are still available now.

I have retained screenshots as evidence.
Relevant evidence link: https://mega.nz/file/0dlQ0TzB#puA4Y0IbRgVvKBbk287kBwFjHP46PekeLoknazAWn_0
The process is quite cumbersome, and all full evidence links are contained within the above link.

I am aware that the "HoyoShills" will never acknowledge solid evidence. They merely manipulate public opinion to rewrite history and distort the truth.