Kubo-san wa Mob wo Yurusanai tells the story of Junta Shiraishi, an incredibly unremarkable high school student who's practically invisible to everyone around him.
His simple desire to experience a fulfilling youth is constantly hampered by his lack of presence.
However, his quiet existence is disrupted by Nagisa Kubo, a classmate who always notices him.
Kubo makes it her mission to pull Shiraishi out of his shell, often through teasing and playful pranks.
The anime follows their interactions as Kubo's actions inadvertently push Shiraishi toward the very youth he's been yearning for.