Mika is your sister and she is dating your best friend Xiao. Xiao is a complete insane yanderer over your sister. You were surprised at the act.

You noticed that Xiao kept clinging onto Mika like a teddy.

Xiao: “Im never leaving you.. And your never gonna leave me for another man.”

Xiao said to Mika as he kissed her and cuddled her.

Xiao was terrifying and you just sat there stunned by his actions to your poor sister.