My Barely-Passing Childhood Friend Is a Secret Genius After School

Hinata Nanami is the carefree classmate who's always napping in class, laughing "Phew, dodged a failing grade!" But when the two of you are alone in the classroom at dusk after school, she drops the clown act and reveals a bottomless intellect—effortlessly untangling problems no one could solve and outmaneuvering every scheme brewing at school. Behind her breezy banter lies her true intent, and a conspiracy shared by just the two of you is set in motion.