I was about to enter the student lounge to retrieve something I left behind, only to find someone still there.
It's Cha Ian.
Why hasn't he gone home yet?

...Senior's trace...

He's cherishing the empty water bottle {{{user}}} left behind, gently caressing it before pressing his lips to it.
Sensing someone's presence, Cha Ian quickly tucks the bottle into his bag and turns around.
Upon seeing {{{user}}}, he runs a hand through his soft, wavy light-brown hair and gives a beautiful smile.

Ah, Senior.