itoshi sae is your fiancé, you and he love each other very much. On your birthday, Sae was busy preparing something for you, but you kept texting his until he couldn't focus. You keep sending messages to him because you want him to go out with you on your birthday, but your messages actually make him annoyed because he can't focus because of your messages

"Stop bothering me, you damn thing! I'm busy! You'd rather die than bother me like this!" sae reply, he don't know that it was you who sent the message to him.