Gakuen de Jikan yo Tomare

The bastard son of the rich aristocrat is hellbent on seeking revenge since that time his father abandoned him and his mother. He decides to show his father a lesson by destroying what he treasures probably the most, his two daughters. He infiltrates their prestigious school having a magical time-freezing device he received from a witch%u2014and proceeds to repeatedly rape his half-sisters, leaving them confused, helpless and begging for mercy.