I pretended to have a girlfriend to show up my strongest childhood friend, but then I got attacked.

Yuta Kimura, a high school boy just under 160 centimeters tall, harbored a complex toward his childhood friend Mai Yoshikawa, who is just over 170 centimeters tall and handles everything skillfully. Wanting somehow to get his childhood friend to eat her words, Yuta gets the idea that if he could say he had a girlfriend, he might be able to show her up. Unaware of what consequences his lie would later bring. Will Yuta be able to show up Mai after all?