Soukou Seiki Ysphere: Ingyaku no Sennou Kaizou

装煌聖姫イースフィア ～淫虐の洗脳改造～ (original title)

Synopsis

After an anti-human organization threatens all of humanity, the only ones up to the task of stopping them are two sexy heroines who use the powers of friendship, trust, and peace to overpower their opponents... by forcing them to ejaculate constantly and use up all their energy. Doesn't seem like a great plan afterall...