Its Zy0x letter to Alercchino when she was drip marketed but changed to Archer from Honkai Star Rail.
Dearest Archer, I am writing you this letter to introduce myself. My name is bone-of-my-sword23, but you can call me Bone. I would love to get to know you better. I am good friends with both Rin and Saber (Sakura doesn't talk much) and have heard wonderful things about you. If you would ever happen to have even an ounce of free time, it would be my pleasure -- nay, my honour to accompany you during that period. I have been known as a hero, of sorts (or a hero of justice, if that sounds better to you) and have been known for my benevolent acts of kindness, generosity, and grace. If possible, being blessed by your presence over the course of the weekend or whenever you happen to be available, would allow us to connect and better learn about each other. We could go to the Fuyuki beaches (I speak Japanese), and swim with the mana dolphins. I have always loved swords, both the blades and the handles, and you are the bone of my sword (the steel of my body (believe when i say the fire of my blood)). I will give you all of my Seele's relics if you so desire. I would be honoured and am eagerly awaiting your response. See you soon!