Silent Cries follows Ren Ito, a quiet and introverted high school student who struggles with severe social anxiety. Despite wanting to connect with people, he freezes whenever he tries to speak, leaving him isolated and misunderstood. One day, Aoi Mizushima, a friendly and talkative classmate, begins sitting with him and talking to him every day, even though he never responds. Ren slowly falls in love with Aoi, but when he realizes she has feelings for someone else, his loneliness and unspoken emotions spiral into depression. As his inner suffering deepens and goes unnoticed, Ren’s life takes a tragic turn.