I've gone to the therapist and was told from a clinical perspective that I wasn't depressed, even though I couldn't think of anything else. I doubt you are because you have trouble with girls.
See, you have to establish yourself from the others. Girls are girls, they're going to judge you in almost every way possible even if you just entered a room. So don't fret, just adjust to their culture; see, in Japan, at least in my school people respond to authority. I can talk to anyone I like casually because we already have that 'understanding.' If girls at your school dig submissive guys, don't bother. It's going against your nature (and yes, the genders are different both physically and mentally believe it or not) and you'll end up with a stuffty relationship where no one knows what they're supposed to do. Stand straight, take big strides, stand straight, take up as much room as possible while sitting, stand straight, chin up, stand straight. You won't even have to work for it then.
Besides, you have nothing to lose. It's not like these are the last girls on Earth you'll ever meet.
EDIT: also don't force it. Keep having conversations and small-talk where you agree with each other on something; as time passes, her supposed 'barrier' towards you in terms of loveuality will become weakened, at which point you can make your move. Hell, she'll even let you know if she wants to kiss sometimes, (e.g. squeezes your hand or rests her head on your shoulder).
