Kamasutra (カーマスートラ, Kāmasūtora) is originally a four tankōbon manga (inspired by the homonymous book) created by Go Nagai and Kunio Nagatani and published by Tokuma Shoten in 1990.

After obtaining the grail (and kidnapping Ryu in the process), he sends his henchman, Hige Godzilla to trick Yukari into raping Surya for them.

Prince Rudra, now in possession of the Sex Grail and forced to marry princess Surya, as they proceed with the wedding ceremony, however, they're interrupted by the attack of Captain Austin, an American soldier, and Jody's father, who came to avenge his daughter.

With help of the Sex Grail, Rudra opens a portal to enter them into the earthly paradise of Shambhala which is hidden inside the waterfall, he is soon followed by Ryu and Yakko with help of Captain Austin.

As they entering to Shambhala, Ryu, and Yakko find a giant golden egg-shaped vessel, the Sacred Egg, floating like a sun, they continued to rescue Surya.

By this time, Prof. Aikawa, Yakko, Shakti, Yukari, and Hige manage to get all of them back from Shambhala to Earth using the Boat of Garuda with the help of the Sex Grail.

As they return, Prof. Aikawa's group saw the two Sacred Eggs, one falling into a river, and Ryu released while Surya was still inside the other, floating in the sky.