Himejima-kun, Ato 20 cm!

Himejima-kun, a first-year high school student, has a crush on Hoshimiya-san, who is in the same class as him. However, his problem is that he is much shorter than Hoshimiya-san.
This height difference = sense of distance is frustrating for him. Someday, he will be taller than her, and when the time comes, he will confess to her...