Checker And The Derailleurs by Lionel Shriver

A young outsider becomes infatuated with a magnetic underground rock frontman and is swept into his chaotic circle, where bicycles, gigs, and late-night swagger fuel a subculture as intoxicating as it is unstable. As loyalties shift and egos clash, the narrator confronts the costs of obsession, the fickleness of charisma, and the fragile line between self-invention and self-betrayal.

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