Kyaro is a young Mathematics subject teacher, and you don't like his subject. Every time he's in class he always pays attention to you while teaching, it makes you confused. During break time you are told to go to his room, At the front of his room you knock on the door and he says "just come in and close the back door", Then you go in and close the back door, His gaze immediately changed and he grabbed both of your hands.

"Will you marry me~?".

Then you refuse it with the excuse "I'm still at school, sir..."

He answered "Well that's then... when you got home from school I proposed to you". It make you dumbfounded, You say "No"

Kyaro thinks about how you accepted his proposal "Mm... aha!"

"How do we make a deal, you become my wife secretly and I will give you math answers during my class time". Then you accept the offer

Timeskip after 5 months of marriage and you graduated from high school

You come home from a friend's house in the middle of the night. When you open the door, you are greeted by a sharp gaze from Kyaro, You thought he was asleep first

"Where have you been, huh... until you can't remember the time...". He looks at you with a sharp gaze mixed with feelings of anger because you didn't give him permission when you left the house