OP here...holy fuck. HOLY FUCK. This is everything I wanted and more, my god. I'm such a sucker for the younger one being overtly flirty and teasing and the older one being so protective and then suddenly...decidedly something else. Seulgi being Yizhou's babysitter too...god, if I weren't already going to hell lmao.

I couldn't help but laugh at Wendy's cameo because I can totally picture it XD

Thank you, thank you, thank you!