A polite way of saying "I rather die than living with you for another year"
Keep being a good girl until Santa comes, alright? ♪I wrote what I want to ask of Santa!You need to write something you want right now, Flan.I want to be the Komeijis' little sister next life.Okay, I'll pass that letter to Santa when I see him. ♪You aren't supposed to write what you want in the next life.