It's a little messy, but I can try and give you the quick version.

[ A thoughtful hum follows his sentence as he considers what indeed may be a quick way to say what needs to be said. With his hands free, Childe folds them over his chest before finally speaking up again. ]

Okay, so... you've been reborn as a demi-god called an Aion and are here to fight a war over the future of this world called Horos. Both sides want to make Horos a better place, but have extremely opposite ideas about the best way to do so. Usually I'd say you get to pick which one you want to support, but recent situations here have made that not the case, anymore.