No One Knows Who Dies At The End by Adam Silvera

In a near-future world where a service alerts people on the day they will die, two teenagers receive notice that their End Day has arrived and connect through an app that pairs those spending their last hours together; determined to live fully, they spend the day confronting fears, sharing secrets and joys, and forming a profound bond as they explore love, regret, and what it means to truly live in a single, transformative day.

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