However, Nagahide NIWA, who was then crossing Lake Biwa by boat, decided that now was the time; despite objections from his subordinates that he should return to Sakamoto for the present, Nagahide changed his course and ventured a landing on Kaizu, which decisively turned the tide of the battle.
しかしその頃、時を同じくして船によって琵琶湖を渡っていた丹羽長秀が「一度坂本に戻るべし」という部下の反対にあうも機は今を置いて他に無いと判断し、進路を変更して海津への上陸を敢行した事で戦局は一変。