Hahaha, Sakuya-san has been awake all this time? She's probably thinking how meiling is such a chucken over a kiss. But then again giving Meiling's pure heart, such a kiss means something more.
Just to be clear, Sakuya was not awake the whole time, and she was not waiting for Meiling. She only woke up in the second to last panel, possibly because Remilia is loud.
...I think....to honor your master's orders?ShiverShakeWell, isn't it?Meiling?Ah...Yes......you are my gatekeeper, yes?Er, y-yes, Ma'am.Is the gate all you protect? Is it not your duty...Is this my fault?ShakeStill......doing something like this just out of curiosity......might be rude toward Miss Sakuya...Wouldn't it be better to let her sleep...?...since she's......so tired and all...I don't care either way, but...Stand...Meiling...Ehhh? What's going on? Why did I wake up to this front-row seat to potential carnage?