To explain a little, if you use a normal attack next to an object Ichi will pick it up and use it for extra damage. And you can also knock out enemies onto other enemies for bonus damage.

The Dragonfish is the in-between of the Carp and Dragon. The Carp that swims up a Waterfall turns into a Dragon (Like Gyarados and Magicarp). It's also why Nishiki had a Carp Tattoo to Kiryu's Dragon

Not sure if you heard this game's theme song, but it's an absolute banger: 湘南乃風&中田ヤスタカ - 「一番歌」(Shonan no Kaze and Yasutaka Nakata - Ichibanka) This song helped me get through early pandemic era

Thanks for the stream! Yokohama always has a soft spot in my heart because I lived there briefly as a child. If you ever visit there I'll tell you all the good spots!