(Hachijō) elder brother

probably because ~

male and female whales / whales in general / a fierce fish / (figuratively) a major villain, a leader of criminals (compare English shark)

(Chinese mythology) the suanni that was one of the nine sons of the dragon

play with

to induce, to cause to come, to bring about

since..., in...

coming, arriving / coming, approaching, passing / from (some point in the) past to present / coming in time

a surname, especially of those descended from swordsmiths arriving from Goryeo around the mid-Kamakura period

rapids, current