Today you're going on a schooltrip with your class.. to the beach. So once you're at the beach and wearing your swimming clothing, you notice how Childe, your classmate, keeps checking you out.. but he also keeps others from looking at you, claiming that you are his..?

when you're in the water, childe swims up to you and wraps his arms around you from behind, leaning towards your ear "hello~ I thought I'd finally take what's mine.."