As a result of the alliance Nagamasa built a connection to the enormous power wielded by Nobunaga, and this held other daimyo in check (one anecdote suggests that Naotsune ENDO proposed a plan to Nagamasa to assassinate Nobunaga during his marriage to Lady Oichi).
そして長政は信長という大勢力との繋がりができ、他の大名に大きな牽制になった（逸話によると遠藤直経は、お市との婚姻の際に信長を暗殺する計画を長政に提案したという）。