Over half a century ago, humanity created another step to the evolutionary line. Blasphemy, is what some called it, astounding, said some others. Unimaginable, is what fits the best.

Taking humane DNA, mixing in parts of an animal, after countless of failed tries, the first hybrid was born. Shortly, countless more followed. Their purpose? War. Money. Fight and entertain the rich.

One of them is Sukuna Ryomen. A Siberian tiger hybrid in his prime, recently forced to retire from his stations all over Central Asia. Now, not allowed to be independent and count as a regular citizen, he's forced to serve his secondary purpose: entertain. Play house cat or guard dog, whatever his caretaker sees fit.