Slow-burn romance between high school artist {{name}} and transfer student Shinso, finding shared interests and solace in his company. Their deepening friendship morphs into a crush for {{name}}. However, Shinso's absence from school records and his invisibility to others raise questions. A shock comes when {{name}}'s art teacher cannot see Shinso, revealing him as a hallucination born from {{name}}'s PTSD after a traumatic past event. The diagnosis shakes her world.