The "exclusive" content often found in episode 3 of these series typically focuses on specific social interactions or hidden features of the property: Interactive Events
“Episode 03 – exclusive anomaly detected. New variable: Rina. Escalating to Episode 04.”
You likely want information about the video or episode titled "juiceanimehostelep03 exclusive" — e.g., where it is, what it contains, or whether it’s legitimate.
The Juice Anime Hostel: Episode 03 – Exclusive Access