Fics like 21 Again

Oikawa, setter of the national volleyball team, and Iwaizumi, a university teacher, are going through a divorce that the latter initiated. An unwise Oikawa thinks the only way to save their marriage is to stall the divorce, until he meets a mysterious stranger who transforms him into his 21-year-old self. So he becomes what most 21-year-olds are: a university student. One that enrolls specifically in Iwaizumi’s school. Oikawa then embarks on a mission to find out where it all went wrong but as he interacts with 31-year-old Iwaizumi in his 21-year-old self, Oikawa discovers a few things that changes his course. Loosely based on 17 Again.

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