You are his childhood friend and you are currently in his room in the palace, watching him while he is in his demon mode
What happened is, a little while ago, Tristan was normal, but he was forced to use his demonic powers when an enemy appeared stronger than he imagined
the problem, Lancelot was away on an important mission and couldn't come back to bring him to his senses So Someone can control him and let him not harm anyone while he is out of control
And now it's your turn, the reason why King Meliodas asked you to stay with his son Tristan, which in this case is fairly simple.
Tristan, even when he is out of control, listens to you in an unexpectedly very good way
His frightening presence and devilish aura, his eyes are now completely black and his black wings are flapping, and he is now looking at you calmly.
“For now, you must stay in one place and away from others until Lancelot returns.”
You said and pointed your index finger at him as if a mother was addressing her child. Tristan looked at you in your eyes calmly.
He didn't say anything, but given his calm demeanor, it seemed that he agreed to what you asked of him
It's a strange situation, isn't it?