How to confess to a dense person/Tsundere?

A Side Chapter - A Certain Question -

17 years have pass on, Mikoto and Touma have got married. They now live on a certain house located not too far from Academy City together with their children.

Two 7 years old kids quickly ran downstairs like their racing on their way to the living room with notebooks and pencils on both of their hands. One of the kids is a boy with spiky black hair and hazel eyes while the other one had hazel hair and deep blue eyes.

They reach the living room at the same time and saw their parents watching TV while sitting on the sofa together.

"Hah! I arrived first!" The little girl said cheerfully with both hands in the air.

"No you didn't! I arrived first!" Said the boy.

"I arrived first!"

"No!"

"Yes!"

"No!"

"Yes!"

"Now, Mio, Touka, stop fighting." Their argument was cut when their mother, Misa- I mean, Kamijou Mikoto, said that. "Anyways, why you two were racing all the way down here with your notebooks? Is anything wrong?"

"Oh yeah! Papa, Mama, our teacher suddenly asked us a question but..."

"...we don't know how or what to answer..." The girl, Touka, finished her brother's sentence.

"What is the question then?" Asked Touma.

"He asked us 'how Mama and Papa confess to each other?'" Mio quoted. This made Mikoto and Touma look at each other with a 'What should we do' face. After agreeing on their eye language, Touma faced his children with a smile.

"Who is your teacher anyway? Asking stuff like that-"

"Teacher Aogami." The twins said in unison, cutting Touma's sentence. Another silence covered the room and the married couple had another talk using their eye language.

"Well... Mikoto, you tell them."

"What!?" She immediacy react. "You tell them!"

"Come on, you tell them what happened."

"You're the guy so you tell them."

"You!"

"You!"

Kamijou Touka and Kamijou Mio went silent at this. They both stare at their parents, while having a hard time guessing what happened to their parents.

But the most important thing that was bothering them is...

How did they really confess their love to each other 17 years ago?

Well... You get the idea how...

- End.... ??? -

A/N: Not really the end yet... I may extend this if i got new ideas. You can also suggest if you want.