Cute.crd.co

search pixels that you want, you have to search in Japanese, so use a translator if you can't do that

While using Firefox (makes the process easier), open Web Developer Tools

Click on the icon that looks like this , and click on any emoji on the site

Under "Filter Styles", it'll give you a direct link to the emoji. click it and save it!

note: on the site you can save a certain amount of emoji on the bottom bar, and then all of the links to them will be in a nice list when you use inspect element. i also recommend getting a translation extension for firefox if needed