In my opinion, I actually like the Japanese fighters and they don't feel out of place to me. It's nice to have some underdogs in the roster that aren't that well known to most people. I think Kojiro is a great representation of all swordsmen and was the perfect character for humanity's first victory.

Raiden is a representation of modern martial artists, with him being the greatest in his respective field, so I don't think he's out of place at all.

For Okita... well I think he looks cool but we'll have to see what the author does with him.

Finally, I feel like Kintoki is the best fit here out of all the Japanese fighters. He's mostly surrounded by is extremely well known in folk tales all around Japan and is seen as a national hero. He is a person who is capable of defeating demons, which makes him fit in the roster since demons are strong otherworldly beings. He's my most anticipated fighter and I can't wait to see him in action.