Jisho

Are you on a Mac? The brackets are in "emoji and symbols" found in the edit tab. It also offers font variations.

In Windows, look at this.

https://support.office.com/en-us/article/insert-ascii-or-unicode-latin-based-symbols-and-characters-d13f58d3-7bcb-44a7-a4d5-972ee12e50e0#bm1

The Unicode for those brackets are 3010 and 3011.

I'm on Windows. I'm pressing Alt + 3010 or Alt+3011 but all is something like VT

thanks for quick reply btw

(When i press Alt+35 I get # hashtag without a problem)

Sorry for the late reply, but what you can do is use Microsoft Keyboard Layout Creator : https://www.commentcamarche.net/download/telecharger-34055597-microsoft-keyboard-layout-creator

The link is in French, but the software is in English.
With it, you can choose what symbole which key of your keyboard input when you are writing.

For example, you can decide that C+A is making the left bracket.
Or that a key you never use is making it.
Or again, Shift+C is making it.
You choose what is more convenient for you...

You need to look up at a tutorial to use it, but it's quite simple.

If you use a Japanese IME, just type normal square brackets and press spacebar a bunch of times :D

Oh, interesting too. Thank you.

Linux: [ctrl]+[shift]+U 3010 --> 【