Isn't It Perfectly Normal for My Beast to Be Covered in Tentacles?

[Unconventional Beast Taming] [Cthulhu] [Grim] [Ensemble Cast] [Infection and Mutation] [Spirit Beasts]

Mild-mannered spirit beasts undergo unknown mutations, sprouting writhing tentacles, countless eyes, and diseased, throbbing pustules…

They open their mouths until the corners split, let out bone-chilling howls, and become frenzied, bloodthirsty monsters.

Eerie whispers echo ceaselessly in your ears as everything before your eyes begins to warp.

Hollow out your innards, sacrifice all your flesh, spread your arms wide to welcome the indescribable power.

It… is calling you.

Will humanity soon undergo a transformation… or face annihilation?