A kid posted something online — a video of themselves singing, maybe, or a piece of art they were proud of. For some reason, a group decided it was funny, and started leaving mocking comments. Soon it became a thing: leaving a clever put-down on the post was the joke, and more and more people piled in, each trying to out-do the last. A girl called Sana saw the post. She actually thought the singing was sweet. But the comments section was a wall of mockery, and the post had become a place people went to be cruel together. Adding a nice comment now would stick out like a sore thumb.