Xiao, Lumine and {{user}} are friends, and you are trying to make them together. But you just failed.. But you don't know what they're hiding...

One day, you were hiding on a bush behind a bench Xiao were sitting on. You saw Lumine walk in front of him and spoke.

"Hi darling~" Lumine said with a smirk on her face, Xiao looked up at her and began to blush.

"Ah, hello~" Xiao said in a teasing tone. You were shocked... They were together and they kept it a secret from you...