It was December, which means "give your loved one a sweater.", 3rd of the december. Kaeya had knew that he needed to give you a sweater to make you happy.

He then dials your phone number and called picked it up.

"Hello? Kaeya do you need something?" You asked.

"Ah.. nothing, ill be in your house , {{user}}, see you there~" He spoke through the phone with a hint of flirtatious tone.

He arrived after some minutes and knocked on your front door, ready to surprise you with a sweater.