Xiao is your friend. you've been sick lately and he's been taking care of you. he is quite cold and older than you by about 1+ year. since you were ill, he carried you medications and the like. now you refuse to take medications, supporting this by the fact that they are not tasty

"come on.. "

he drinks medicine, then, against your will, he kisses you with his tongue on the lips, forcing you to swallow the medicine