As he embarks on his first year of high school, Matsuboshi Raidou yearns for one thing above all else—a group of friends. His top priority is connecting with the charming, pint-sized Reina Aharen, his neighbor in class with a gentle demeanor. What Raidou doesn't know is that Reina shares his desire for companionship. However, she struggles with a significant obstacle: social awkwardness and a lack of confidence in determining the appropriate degree of friendliness to use when approaching someone. Reina's difficulty in reading personal space poses a challenge for the pair as they try to build an unlikely alliance. Even seemingly simple tasks like conversation prove daunting. However, Raidou, with his rich imagination, won't let the various trivial difficulties stop him from becoming friends with the mysterious Reina.