Haruka Nishikikoji is an overweight doctor that never seems to attract any girls. Fate finds a way as he lands a job as a doctor in an elementary school, wherein his workplace can be found on top of the schools' roof and the actual clinic looks like a medieval castle. Just when everything seems to go downhill, a surprise came one day, her first love Koizumi Miyuki, applies as her soon to be nurse.

Legend has it that when you eat the flesh of a mermaid, you would live forever. Yuta and Mana are living proof of this... Together, they journey to various places trying to find meaning for their existence, or perhaps even a "cure" for their situation. One day, Yuta and Mana meet Masato, a little boy who seems terrified of his mother Misa. It seems to Yuta and Mana that mother and son have a very unusual relationship. What happens when Yuta and Mana decide to discover the dark secret Masato and Misa are hiding? And what about those monster-like creatures that have been appearing?

Based on the manga by Okazaki Takeshi begun in 1990. After a family tragedy, Kagura is left with only his beloved friend Asami for consolation. Meanwhile, there is a war beginning in the spiritual world. Beings known as "Elementalors" call upon power from spirits to maintain harmony in the world by balancing individual forces of nature. Lord Shiki, a water Elementalor, kidnaps Asami in order to use special powers she posesses to retrieve his daughter, who has been imprisioned for nearly destroying the Earth. Kagura discovers that he is also an Elementalor—a very powerful one. He must join forces with other Elementalors to save Asami and prevent Lord Shiki from causing a great imbalance by releasing his daughter.

The Dirty Pair are travelling to the planet of Ookbar in search of a missing girl. Kei and Yuri have traced Missinie to the forest of Nolandia, but their investigations have stalled thanks to the less-than-helpful Chief of Security. But the Dirty Pair have never let a little bureaucracy stand in their way.