The scene of the children fighting, which led to the revelation of the truth of the incident, uses the 'Iji-dozu-ho technique' (showing scenes of incidents that happened at different times in one picture) and is often introduced in the textbooks of Japanese history.
日本史の教科書によく描かれている、事件の真相解明のきっかけとなった子供の喧嘩の場面では「異時同図法」という手法が用いられている。