As a result of my search through kemono, he uses a private website.
Sponsors(Patreon Users) get a password via DM or email, and it seems like they can see videos of the tier that match it by entering the password on the website.
I majored in computer science, but I don't study websites and security, so it's hard to figure out passwords.
First of all, I found out using developer tools and GPT, and I think he used a simple web development program, not a site he coded himself.
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