From Japari Library, the Kemono Friends Wiki
The fifteenth episode of Welcome to Japari Park (2018 ONA).
- Cerval is captured and is now traveling with the group.
- The group heads to the Amatatsu Falls in the Forest of Silence, the source of the goo that's causing the roaring sickness.
- Cerval sees a vision of the Cellian Queen, causing red glowing eyes and an odd aura.
- The Lucky Beast shows a video recording of Kako, who explains that when Cellians copy Friends, they passively gain information about the Friend they copy, exhibited through mimicry.