Kokoro Minai is a high school girl who is older than everyone else in her class. She was blind since the age of three due to a bus accident, but two years ago a corneal transplant restored her sight. Now eighteen and a first-year student, she is eager to experience everything she missed. But high school is not as pure as she imagined, and she struggles with the casual cruelty of her peers.

Shin Kunimi is a second-year student rumored to have psychic powers. The rumors are true: when he touches someone, he can read their thoughts, feel their emotions, and even sense their darkest impulses. Disgusted by the hypocrisy and malice he constantly perceives, Shin keeps everyone at a distance. Yet despite his isolation, he is drawn to Kokoro. She alone does not flinch from him; her sincerity and warmth are unlike anything he has encountered.

As they grow closer, a bond forms between them. Kokoro sees past Shin's cold exterior, and he begins to trust her. But spending time together has a side effect: Shin's ability begins to transfer to Kokoro. Suddenly she is also bombarded by the ugly thoughts of those around her, unable to shut them out. To spare her the suffering he knows too well, Shin disappears from her life without explanation.

Two years pass. Kokoro is now a third-year student, still carrying the trace of the psychic power that latently resides in her. When her mother is critically injured in a car accident, Kokoro unconsciously calls out to Shin with her mind—and her mother stabilizes. Shin reappears, but he is not alone. He has been living with his uncle Kenji, a university professor who researches psychic phenomena, and Kenji's daughter Sara, a girl with her own powerful abilities who is deeply attached to Shin.

Kokoro and Shin confront their lingering feelings. She wants to be with him, but she feels inadequate next to others who truly understand his powers. With Sara's unexpected encouragement, Shin uses his ability to instantly teleport to her side—a breakthrough he had never achieved before. They reconcile and, after entering university, begin living together.

Their life is not without danger. A young boy named Yu, who possesses a destructive "red" power, is brought into Kenji's research facility. Yu has already killed animals and people without understanding death. Kokoro and Shin slowly earn his trust and decide to become a real family. When Kokoro becomes pregnant, Kenji—obsessed with studying Shin's potential—uses hypnosis to turn Yu against the unborn child. To protect Kokoro, Shin kills Kenji with his own power.

The act plunges Shin into guilt and despair, and his aura turns black. But Kokoro refuses to abandon him. With her unwavering love and the discovery of Kenji's final message apologizing and wishing for Shin's happiness, Shin begins to heal. He, Kokoro, Yu, and the new baby find a fragile but hopeful future together, accepting both the burden of their abilities and the strength they draw from one another.