Hey,

I daily run past a Sushi Restaurant in my local Shopping Mall. There is a girl who works behind the cashier who has taken notice of me and given me big smiles and long deep glances.

The problem is that she never works alone in the cashier, she is always together with at least 2 other girls.
The thing is that I do not want to go and eat sushi there, I just want to be direct with her and ask for the number.

Do you any tips to give me in this specific situation?

Main tip would be to be used to speaking with women and inviting them to meet up and all of that. If you are not used to it then any tip here will probably not be executed with comfort on your part because you'll be nervous and will be wanting it to go well.

On the other hand, if you have experience with meeting women then I would just ask her to extract herself from the others and just say that you've noticed her and she's adorable or whatever but you have to get to work; get her # and/or schedule a meeting for after work that night.

Congratulations for wanting to do this man. Back in the day I was in situations like these and I never had the balls to even think about making a move.

Short of talking directly to her and asking her for her number, you could try the following.

Just say you walk past that place all the time, but have never had sushi. Pull her aside and her about the sushi. She if she is willing would go to nice sushi place, different from her work, and show you the ropes.

Not exactly direct, but gives her and yourself reason to have conversation away from the other employees. Lets both of you save face to some degree. If you're not comfortable being direct and asking for her, perhaps this a middle you'd be more comfortable with.

If she seems hesitant, come up with something witty such as, "that's okay I do even like sushi, lets do.., whats your number."

Once again, it's more about confidence and indifference to the outcome. You can used what I described as a starting point, if those ideas make you more comfortable.