The Most Powerful and Handsome Man in History

Travel to the three worlds of Digimon and become Ruki Makino's sister. But how can I be so proud in this world? Makino Ruki: Sister, what on earth are you doing? Makino Ryoka: Obedient sister, be good, keep it secret, don't tell anyone. Otherwise, just wait for me and I will make your life worse than death. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.