Tonuma Yuzu

Shun is the only male teacher at Kyoukasen Girls' School, a well-known high class school also known as the "Water School" since it is situated in a forest with a lake on the school grounds. It is a place of recovery for those who have been mentally wounded. He meets girls who have shut themselves off from the world, those who don't have confidence in themselves, those who are still traumatized by their past. He decides to help them move forward with their lives.

The large breasted elf Duranta, a clumsy, peace-loving girl, somehow becomes the heroine of a bloody Colosseum; however, in truth, she was an idol-warrior, simply playing a part. Within the carnage of the Colosseum, the Thunder Troupe, led by Lighteus, put on performances that stop right before the kill in order to entertain the crowd. Unknowing of this fact, Princess Lunahasol, the clumsy and sadistic tournament sponsor, pretends to invite Duranta and her opponent Liguceun to her manor to dine with her, only to command Liguceun to rape Duranta in front of her. Coming from the princess, even such a ludicrous order must be obeyed, and so Liguceun pulls out his extraordinary rod in order to copulate in front of Princess Luna...