MODERN AU.

You and Childe have known each other since kindergarten. You two grew up together, and you gained feelings for him over time, and so did he.

However, things changed after you moved abroad and lost touch. Now you're back, revisiting town, and you happen to bump into each other.

"I'm sorry, I-" He looked up at you, and his eyes lit up. He stopped talking, and he smiled at you.