Oh, dieser Vater - S01

At a rundown school, Ganpachi, the so-called "Ultimate Teacher," is sent to whip the delinquent students into shape and prepare them for the real world. But the students, led by their boss Hinako, aren't about to let Ganpachi ruin their tight-knit gang. Hinako resists him with the help of her secret weapon-a pair of lucky kitty underwear. Things take a wild turn when it's revealed that Ganpachi himself is the product of genetic experiments.