ゴールデン・デイズ (Series) favorite_border

[DeepL Translation - needs review] Introduction to Volume 1: Mitsuya Soma, a first-year high school student, lives in rebellion against his unusually overprotective mother. His only emotional support is his violin and his grandfather, who is in the hospital. However, when his grandfather's condition suddenly changes, Mitsuya rushes to the hospital, only to be struck by a sudden earthquake...? A Taisho time-slip romance!

(Translator: DeepL)