The bird in the cage (слэш)

A single memory was enough to turn his world upside down. Even though many years have passed since Severus Snape’s death, one person cannot stop thinking about him. He needs to discover who the man who loved him in secret truly was.
And Harry searches, and he learns. He writes, so that at least in his story, Severus can live again. He writes, so he won’t forget. He writes, so he can fall in love. He writes, so he can meet him again and stay by his side—because no one belongs to Severus Snape more than Harry Potter.