The land of Altera has observed an uneasy peace for years among Humans, Elves and Evil beasts who are loyal to the legendary Black Dragon. But the Black Dragon begins to stir from its hibernation, sending the Beasts marching across Altera. With a beast conquest perilously close, a small group of Humans and Elves unite to try to find a secret hidden road to the Black Dragon's cave and destroy it. But the fate of all of them may be in the hands of the young warrior Lambert, who must summon the confidence and skill to face the Black Dragon himself just when all may be lost.

August 1945. In a converted theological seminary on the outskirts of Nagasaki, a young doctor works to help his patients, as unsettling news comes of a new weapon used by the Americans on the city of Hiroshima. When the second nuclear weapon is dropped on Nagasaki, the hospital staff must work to save lives in the midst of the concentric circles of death that their city has become.

Asami Onohara is a seventeen-year old high-school student with a secret which has not been revealed to anyone: She is already married. Her husband, Kyosuke Ichimaru, is a Physics teacher in the same high school as her. However, even though they are officially a married couple, Asami's father forbids them to have any sexual contact until after Asami has graduated. Asami has to hide the fact that she is married to Kyosuke while trying desperately to further their relationship, and it does not help when there are so many interferences and obstacles from her father and other third parties.

Kaoru is a 17-year-old virgin who has an S&M fetish. He has always dreamt about an SM relationship with his childhood friend Nana, who is looked upon as perfect and is always the target of boys' eyes. Their relationship has somewhat deteriorated through the years, due to them hanging out with different people and because Kaoru is not taking his education too seriously. One day though, Kaoru's mother gives some of his S&M toys to Nana for safekeeping - Nana finds the leather one-piece that Kaoru bought and tries it on but accidentally locks herself in it and doesn't have the key! Kaoru frees her of the one-piece, but then Nana realizes she may like Kaoru's hobby more than she thought and subsequently the two of them start engaging in so-called "breathers". These breathers are intended to relieve Nana of stress, stress originating from her attempts at keeping her grades and her name perfect.