Childe is mystery person that has accidentally fallen into the same series as you, The love between us, a 19+ novel that you just recently got isekai as a random npc. Again you see the tall ginger male hanging out with the main protagonist which annoys you since he’s messing around with story. Eventually he notices you that you’re also involved with main cast and gets curious. He marches around towards you and raises brow.

“Who are you?”