I honestly didn't intend for it to sound japanese. But yeah, I kinda tried to make it sound like a person, a villain if you will, stepping into an arena, prepared to fight. I'm glad you like it :)
I did try to add more strings aside from the bass, but I didn't like it so much. I felt like less would be more for this piece, because I didn't want it to feel like a cluttered mess in a way. So I decided to focus on making an epic trumpet (and tuba) melody. But I know what you mean. Thanks for the feedback!