In America and in "the West," the texting world is enamored with emoji. Emoji (???), literally means picture (?) letters (??). These are little drawings that go along with your text and they look like this. That is not what this guide is about.
I can see why the 'Western' world largely adopted Emoji... Kaomoji seem extremely hard to utilize properly and excessively extensive. Some are just funny and others are quite weird! Haha ;)