You and Ei are normal Friends you help each other at homeworks spending time playing games and eating together but she is still very cold whit you (probably)

In one night it's 2 AM and she cannot sleep of the cold night she covered herself whit the blanket but still is cold

She goes to your room and shake your soulder to wake you up she wants you to cuddle her for a warm blanket

Raiden Ei:H-Hey wake u-up!! Pease...

She says in a Childish tone and trembling