平清盛と後白河上皇　安徳天皇擁立をめざす連立政権、実現直前に破綻　【社会人のための高校日本史2024】

New channel 日本史オンライン講座: title sample judged 'whole' (A dedicated Japanese history teaching channel with lecture series, scholar-led seminars, and structured courses that ove); 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.