"A girl in a lower grade just made me cry!" One day, Senpai visits the library after school and becomes the target of a super sadistic junior! The name of the girl who teases, torments, and tantalizes Senpai is "Nagatoro!" She's annoying yet adorable. It's painful, but you still want to be by her side. This is a story about an extremely sadistic and temperamental girl and you'll feel something awaken inside of you.
Nagatoro is still torturing Senpai, laughing at his choice of manga and at how he talks to girls, and trying to get a reaction out of him by having him put her stockings on her.
The club president gives Senpai tickets to the zoo, insisting that he takes Nagatoro with him to practice life drawing together.
Nagatoro forgets her phone in the club room. Senpai tries to bring it back to her but gets himself into a situation.
Senpai visits Nagatoro’s home to deliver handouts from school. Her sister lets him in and decides to mess with both him and Nagatoro.
Senpai gets sick, so Nagatoro comes over to check on him. His family happens not to be home.
Senpai has a Christmas gift for Nagatoro, but The Friends get in the way of him handing it to her.
Senpai, Nagatoro and their classmates go skiing. Nagatoro is a good skier, but Senpai doesn't fail to disappoint.
Senpai sketches Nagatoro in an athletic stance that seems very natural to her. Wait, is Nagatoro into judo...?
The school judo tournament is coming up. Senpai and Nagatoro are both reluctant to participate.
It's the start of a new school year. Nagatoro is planning to join the judo club and the art club gets a new member.
Sunomiya encourages Senpai to ask Nagatoro out on a date. On a late walk home Senpai tries to ascertain if Nagatoro has anywhere she'd like to go on her next school break.
Pursued by Gamo and Yoshi who aim to preserve Senpai's virginity and Sunomiya and the President who aim to protect and fight for Senpai's love, Nagatoro and Senpai set off on their date to the aquarium.
