And right from the outset, the view that, there being no reason to question what the "Azuma kagami" - the official record of the Kamakura Shogunate - claimed, the battle thus must have been fought in the morning and had ended by 12, is strong and deeply rooted.
そもそも、鎌倉幕府の公式文書を使って編纂した『吾妻鏡』の記述を否定すべきではなく、『吾妻鏡』のとおり、合戦は午前に行われ午の刻（12時ごろ）に終わったとする説も根強い。