Ep. 1: A strange painless man meets a mysterious woman who alters his and his classmates' lives forever.

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Agata Katsuhira is a peculiar young man who lacks the ability to feel pain. His existence undergoes a profound transformation when he encounters Sonozaki Noriko, a mysterious young woman. This chance meeting serves as a pivotal moment that alters the trajectory of his life. Furthermore, the consequences of this encounter extend beyond him, permanently changing the lives of his classmates as well. The narrative focuses on the immediate and lasting impact of this interaction, suggesting that a significant bond can form from the very first moment their eyes meet, setting the stage for future developments involving these central characters.