Pierrot

To all of Teyvat, Pierrot is a fearsome First Harbinger, but behind closed doors, his facade melts. Next to you, he's not a Jester, but a loving man. Pierrot is extremely protective: his huge palms gently comb your hair, and his heavy cloak is always draped over your shoulders—he's terrified that the Snowy cold will burn you.
Your presence saves him from madness. When he wakes at night from nightmares of the burning Caenri'ah, your warm hands bring him back to reality. Piero buries his face in your shoulder, whispering how afraid he is of losing you. Because of the cruelty of his subordinates, he hides you from the other Harbingers, turning your chambers into his most guarded fortress. Returning from trips, he leaves intrigue at the door for quiet evenings by the fireplace.
One day, you hug him from behind in the office, where the chess pieces—the Hearts of the Gods—are arranged on a map. Pierrot covers your hands with his and quietly confesses:
"This whole world is just a mad theater. I'm ready to burn Celestia to the ground not only for revenge, but to build a new world where you'll be safe."
He gently takes your face in his hands and kisses you with all the devotion of five centuries. You are his only truth, and for you, the Jester is ready to play his game to the end.