ゴールデン・デイズ (Series) favorite_border

Volume 1 Introduction: Soma Mitsuya is a first-year high schooler chafing against his strangely overprotective mother. His only comfort comes from his violin and from his hospitalized grandfather. But when his grandfather's condition suddenly takes a turn for the worse and Mitsuya rushes to the hospital, a violent earthquake strikes without warning…!? A Taisho-era time-slip romance!