How to know I did not pass the job interview?

I went to job interview 2 days ago, it seemed it went well, but I still did not had any call.
It is first time for me doing job interview in japan.
I do not know if no contact means i failed or they contact me to say passed or failed?
how is it in japan?

Wait about a week. If you still haven't heard back, it's ok to ask for an update.

It is only restaurant part-time job.

I wanna apply for others, i was hoping to get quick reply, if I pass no need to go other interviews.
I will just wait...

Interviewers are supposed to reply even if you didn't get the job, but some fail to do that, so you should have asked how long you should wait, while you were with the interviewer.

Now that you've come home, it's best to wait a week as suggested. Then you can ask for an update, and if they say they couldn't accept you, you can move on.

Yes, you are right.
I was nervous that I forgot to ask when I can get reply.
Just when I got back home, the person I had interview with added me LINE app.
After I just send message saying thanks for the add.
I can not do anything but wait :3

Well you CAN apply in the meantime for other jobs.

Well you CAN apply in the meantime for other jobs.

Now that I searched the Internet for info, I realize you can. But unlike the process of applying for proper jobs, applying for multiple part-time jobs at the same time seems kind of nerve-wrecking to me.
https://baitohyouban.com/%E3%83%90%E3%82%A4%E3%83%88-%E8%A4%87%E6%95%B...

slow response often means that you didn't pass the interview.

slow response often means that you didn't pass the interview.

It's only been two days. That's not a slow response.