Thirst

Kostya

Genka

Pashka

Seryoga Plotnikov

Nikolay, Kostya's Father

Kostya's Mother

Marina, Kostya's Stepmother

Eduard Mikhaylovich, Kostya's Stepfather

Olga

Nikita, Olga's Son

Young Kostya

Headmaster Aleksandr Stepanovich

Head Teacher Elena Vasilyevna

Natasha, Kostya's Sister

Romka, Kostya's Brother

Slavik's Friend

Boxing Coach Mikhalych

Nurse Tanechka

Hospital Doctor

Nurse at the Children's Hospital

Doctor at the Children's Hospital

Patient without legs

Patient with a book

Galya, Pashka's Wife