Porn Game: Hyena HS by Madoromi Andon

-Private Hyena High School-

You wake up to a trashed home.
Your sister is missing.
There's a note on the floor.
"Come alone to Hyena HS."

Madoromi Andon is proud to present our first game, a brutal assault side-scrolling brawler:
collapse mid-game and enjoy your heroine's failure anime -> continue anime,
win boss battles and enjoy the boss's failure anime,
full unlocks for each stage that let you see all the minor characters,
protagonist and boss game animations when you beat that stage.

Hyena HS by Madoromi Andon game preview

online.