Junta Shiraishi blends into the background so much that even his classmates fail to spot him. His goal is to make the most of his high school years, but that pesky invisibility gets in the way...until Nagisa Kubo notices him! Kubo's playful teasing kicks Shiraishi out of his comfort zone and begins a friendship--or maybe something more?

A surprise heart-shaped cookie bewilders Shiraishi on Valentine's Day. White Day comes along, and Shiraishi has his chance to return the favor. Oblivious to the identity of his secret admirer, Shiraishi enlists Kubo's help to give his reciprocal gift. Meanwhile, their classmates and family can't help but catch on to the budding relationship...