Omoikkiri! Seieki Tairyou Chuunyuu! ~Takabisha Onna o Aherasero!~

The lead character has no ability to read the situation and is bullied by several female classmates. But one day, he happens to find a magical drug which makes him an absolute stud! After ejaculating an incredible amount of sperm, he starts thinking about the revenge using this ability...