The Index / NetShort曾祖父が18歳!?~伝説の億万長者~My Billionaire Great-Grandfather is 18Language日本語Episodes7Released2026-07-28PlatformNetShort曾祖父が18歳!?~伝説の億万長者~SummaryThis site lists drama information and links to the official app. No video files are hosted here.Contents1234567