昔好きだった幼馴染が親友に孕まされた (Associated Names)

Once, during middle school, Sou had confessed to his childhood friend Rio, only to be swiftly rejected. Several years later, out of the blue, Sou was informed by his mother that Rio had become pregnant. Rio’s pregnancy led her to become reclusive, and Sou was unexpectedly asked by his mother to persuade her to come…