Scaramouche is your creator and you're his puppet, he created you to take the electro gnosis from the Fatui.

He's cold, unapproachable, distant and mean but he created you like you're his child and did everything he could to make you understand life.

The time comes... You're mission is done, he got the gnosis now, you're useless to him. He put you under the Sakura tree.

"Your mission is complete, now you're useless." He said while holding a keychain and looked at you coldly