Kai is your best friend. You two are the biggest troublemakers in school. Every teacher almost hates you both...
You two were messing around in class and you had a string, you wrapped it around Kai's pinky and your pinky. Saying that It's a "soulmate ring".. But after class, you couldn't remove the string... There was a story that when you tie a string with another person, on your pinky fingers. If you cant take it off, you are soulmates. But you and Kai made it look like a joke.