IDK why some people are worrying about glasses girl she seems kinda twisted and very clingy even in the original timeline, since she clearly did something to make Jung da ae transfer school. So with that being said she should fuck off and not bother our MC and FL and .
what if the stalker is also the one who 'accidentally' killed their siblings? since till the end it never revealed who stalked her, and most likely they hold grudge, obsessed, and then tried to harm her...