It all started as a normal day, having fun with friends, navigating the complicated line between friendship and an unexpected crush. But how did I end up here? What happened? Why am I tied down in a dark room, unconscious on the floor with no one around? Who is behind the door? And, more importantly, how did a day that started so normally turn into this?

@SunnySideGude was supposed to be sunshine. At least, that's what Aster had turned herself into online. She's loud, chaotic, overly enthusiastic, and always ready with a joke. Her account was full of random thoughts, questionable decisions, fandom chaos, and little pieces of happiness she threw into the world. And then there was @underlinedLIO. At first, Lio was just another account on her timeline. A like here. A reply there. A joke shared between two strangers. Nothing important. Except somehow, those little red notifications became something Aster looked forward to. Until one day, Lio was gone. And for the first time, Aster had to wonder: If the girl behind SunnySideGude was supposed to be sunshine, what happens when her own light starts to fade?