This is the story of Mimitani-san, the tallest kid in her class, and Makigai-kun, the short boy in the seat next to her.

Yuuri has a life threatening condition -- if she doesn't get regular doses of saliva from the opposite sex, she'll die. Luckily for her, her childhood friend Taishi is around to help. How will their relationship grow with this complication?

... Of course, that's a lie.

... And of course, the lie is a lie, too.

The tale of two idiotic neighbors who just can't quite be honest with each other, begins now.