The protagonist of this story is Miku, an ordinary high school girl.

Her parents are often away on business trips due to their busy work schedules.
Seeing how lonely she seemed as a child, they decided to get her a dog as a companion.

After the adorable puppy came home, Miku quickly bonded with it and became a much brighter, happier child.
And they all lived happily ever after.

…Or so it seemed.

Years later, Miku is now a perfectly ordinary student attending a perfectly ordinary school.
She even has a perfectly ordinary boyfriend.

His name is Daisuke.

A perfectly ordinary boy and a perfectly ordinary girl,
sharing a perfectly ordinary romance.
Being at that age, their relationship has naturally progressed—
from A to B, and even to C.

They’re just your average couple, enjoying your average kind of love.

Except… there’s one thing that sets them apart from other couples…………??? (lol)

[Translated from dlsite]