As the head of her middle school's science club, it's only fitting that Ueno is also a brilliant inventor. With devices that can convert any liquid into drinkable water, deodorize the most foul smells, or even generate dark matter to be used as a means of concealment, it seems like nothing is beyond Ueno's capabilities. However, she doesn't invent these devices for the advancement of mankind. Rather, the one force that motivates her is love, the only phenomenon she can't quite figure out. Ueno is head over heels for Tanaka, her nonchalant fellow club member. Yet, because she is too nervous to confess her love and he is too oblivious to notice her affection, her love life is completely stagnant. In Ueno's mind, if she could just expose him to perverted situations, then surely he'd get flustered and fall for her, right? Assisted by her stone-faced classmate and dedicated wingwoman Yamashita, Ueno employs her many inventions on Tanaka in a lewd manner in hopes that he may one day understand how she feels.

The story is set in a world where the value of Bikkuri-Man stickers are so high that they have to be transported in a cash transport vehicle. There was also the famous robbery case one year ago, called the "300 million Bikkuri-Man sticker case." One day, a high-school delivery part-timer named Yamato gets involved in a battle over stickers between two competing convenience stores. The Angel Mart owned by the Phoenix store manager is famous for its easy-to-use glitter stickers. The Devil Store across the street also tries to attract Bikkuri-Man fans to their store. Former comrades are divided into allies and foes, and the battle of destiny begins. (Source: ANN)