Kiyotaka Ishimaru Death

Found in kitchen, tied up in a chair, knocked over on the floor. Cut on both legs, breast, and chest with a knife, dug next to where Ishimaru's heart would be. Oregano is found on his face, along with salt along the side of his legs. A fried egg is on top of his chest cut, and a used pan is sitting on the stove. By the side is an open bottle of alcohol. On the fridge is written in blood:

2 "chicken" leg cuts
One freshly sliced "chicken" breast
One "chicken" chest, cut
A bottle of alcohol
2 teaspoons of salt
A fried egg
Oregano
"Now you're thinking creatively!"