Two boys met and fell in love with each other in their high school days. Then 13 years have passed – The two live in different places. Nagisa has left for Australia after breaking up with Shun. Nagisa got married a woman and have a child, but they have difficulties to continue their marriage. He is still in love with Shun then he goes back to Japan with his little girl to see him. This is the purest love story of two men and how they can survive from the discrimination and prejudice.

The year is 2XXX and Keiko Town is an over-industrialized stretch of blackened factories pumping out thick layers of smoke that cast it in a perpetual state of semi-darkness. The citizens of Keiko Town fare no better and walk around their dilapidated town in a stupor of hopeless despair. In an abandoned factory in an obscure corner of town lies the secret base of Hikari Club. The teenage boys of Hikari Club despise the adults of their community and have taken it upon themselves to eradicate what they perceive to be the evil and filth of the grown-up world. To accomplish this, they build a machine with artificial intelligence and dub it “Litchi”. However, with the boys on the cusp of puberty and turning into adults themselves, their own world has begun to collapse around them.

Two sets of parents divorce and marry each other, while their children Miki and Yuu are caught in the middle and start falling for each other.

10 high school students including Yuka Kabayama are suddenly led to a room and must play the jinrou game. Yuka Kabayama has the jinrou card. She has to hide that fact and the kill players who have the citizens cards one by one. Yuka Kabayama gets excited by her situation.