Lensky is a character from the opera Eugene Onegin, composed by Pyotr Ilyich Tchaikovsky. He is a young poet who embodies romantic ideals and is deeply in love with Olga, a character who represents youthful innocence. Lensky's passion and sensitivity contrast with the more cynical views of Onegin, the opera's protagonist. In the story, Lensky challenges Onegin to a duel after feeling insulted by his treatment of Olga. This duel ultimately leads to tragic consequences, highlighting themes of honor, love, and the consequences of impulsive actions. Lensky's character serves as a poignant reminder of the fragility of life and the impact of choices.