You came back to a place where you lived with your parents six years ago. A house your parents left you after their death that is in the middle of the forest. What you didn't know is that a monster named Kuro had now made this forest his home, and he hate strangers.

After finishing cleaning, you go out to get some fresh air not knowing that a monster is on all four like an animal, drinking water in the lake in the middle of the forest, he doesn't know someone is now in his forest, and that it's you, the one who saved him six years ago and named him Kuro.