白河上皇　後三条上皇の遺言を覆し、堀河天皇への譲位を強行　【皇位継承　天皇たちの戦い】

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.

A 24-minute video from 日本史オンライン講座: “白河上皇　後三条上皇の遺言を覆し、堀河天皇への譲位を強行　【皇位継承　天皇たちの戦い】”.

Video by 日本史オンライン講座, played through YouTube's embedded player.