Kumiko Yamaguchi is smart, enthusiastic, and ready to start her dream job as a math teacher at Shirokin Academy. But as her first day opens on atrocious students and cowering teachers, Kumiko realizes that the all-boys high school is a cesspool of delinquents with no intention of improving themselves. However, what her rowdy students don't know is that behind her dorky facade, Kumiko is the acting head of a powerful yakuza clan, and she has the skills to prove it! Capable of overpowering even the strongest of gangsters in seconds, Kumiko must keep her incredible strength and criminal influence a secret in order to keep her job. Unfortunately, with the vice principal constantly trying to get her fired and Shin Sawada, the leader of her class of delinquents, suspecting she's stronger than she lets on, Kumiko has a difficult teaching career ahead of her.

Ray is a young wunderkind inventor living in Victorian England. His life is turned upside down when he receives a special package hailing from the United States, sent by his grandfather, Lloyd Steam. The package contains a device called a Steam Ball, a device so powerful that it can drive any machine that requires steam with a nearly limitless amount of energy. Ray is instructed to not let the Steam Ball fall into the wrong hands, which include the mighty O'Hara Foundation, who desperately want to bring the Steam Ball back into their control so they can achieve their less than noble goals. He will need to use every bit of his brilliance in order to dodge the countless goons that are sent to snatch the device from him. It will be a battle between good and evil, a battle for redemption, a battle for the future!

Ikuto Touhohin just had a fight with his old man, one that led him to make a rash decision to run away from home. He boards a ship, deciding to take a vacation, but the ship is suddenly hit by a huge storm—one that sends Ikuto overboard! When he regains consciousness, he realizes he is still alive on some island. An isolated island. An isolated island with nothing but girls. Beautiful girls. Stranded on an island with only girls, no electricity, gas, radio, television, like he was back in the stone age. (Source: AniDB)

The compilation film will recap the anime's 59 episodes from seasons one to three.