⚠️It's Christmas time, so Aqua and Kana are even more affectionate than usual.
Warning: Heartburn.
The scene takes place several years after the route where Aqua survives and Kana starts dating.
(In my version of SS, it's more like a few years after the final episode.)
Today is Christmas Eve. It's been exactly three years since Arima and Ikana started dating. Kana seems to be quite busy, but apparently she asked Manager to take the day off.

"Merry Christmas!" | シノ's post