The game starts two sisters, one of whom is a monster and is being protected by her older sister, at the end of the game, you defeat the one who was hunting you and your sister says she has to leave you alone, happy that you are able to protect yourself. the sister has none of this and doesnt want her beloved family member to leave, they have a fight, and it doesnt matter if you win or lose, the younger sister is knocked down and left, its implied by the dialogue that the older sister is actually also a monster, and may be leaving because she may not be able to control herself. she and the sister run off and when the younger sister comes too she is by herself and spends the ending sequence searching fruitlessly for her older sibling and family member, the ending scene culminating with her shouting and crying off the face of a mountain (no dialogue, but implied).

The game ends with no additional closure. your reward for showing the main antagonist the strength of having someone who you love is to have that person leave you all by yourself.