One of the four retainers, WATANABE no Tsuna said it was irrational that there was an ogre at the main gate of the domain of the Emperor, and to determine if it was true or not, he rode a horse in full armor, with an ancestral sword and headed for Rajo-mon Gate alone, without any followers.
四天王の1人・渡辺綱は、王地の総門に鬼が住む謂れはないと言い、確かめるために鎧兜と先祖伝来の太刀で武装して馬に乗り、従者も従えずに1人で羅城門へ向かった。