Purrfect Apawcalypse Invert Frontier!

This is Kemono high, 25 years ago from the present day. Miles a young genius, is troubled by Oscar's recruiting and Daisy's tailing. One day, Daisy notices that the door to the basement of the school is open, and she took Miles down to the basement. They pass through a mysterious portal that appears in the basement, and what they find is... a frightening another dimension! Oscar and a mysterious lost puppy join them on a great adventure through another dimension! Will they be able to return to their home world safely?

[From itch.io]