Introduction is incompetent. . .
The protagonist's original character is natural [Xiaobai? ! ] Facial paralysis [If you suddenly ask him to laugh or show other expressions, he will have facial cramps] Loyal dog [only for Nissan]
But occasionally the yandere attributes are exposed
He is a brother-controller. No matter how much Nissan tortures him, he will follow Nissan wholeheartedly [This shows that the protagonist has M tendencies←]
It should be Nissan [actually undecided←]