Sour [kaiyuna]

Main Cast

Jung/Huening Kai. Prefers to be called as Kai. He is a year older than Yuna. Kai is an independent person because he has lived alone for two years. He always becomes a center of attention due to his mixed-race visual. However, not many people know about him or his family except for his close friends. He is a gentle yet firm person and he lives his life pleasantly, but strongly stick to the rules. The only trait that people don't like about Kai is his approval for mint chocolate ice cream.

Shin Yuna or just Yuna. She is a year younger than Kai. Yuna is a bubbly and fun person. She has a lively personality and seems to accomplish everything gracefully. Yuna lives a different life than Kai because she's surrounded by many people due to her friendliness. She is short tempered, but would be protective over things that are important to her. She knows how to draw attention and doesn't care if it pains the people around her with embarrassment.