Watching the news, Takemichi Hanagaki learns that his girlfriend from way back in middle school, Hinata Tachibana, has died. The only girlfriend he ever had was just killed by a villainous group known as the...

Alien invasions come in all shapes and sizes. This time, Earth is under attack by "Unknown Codes" that infiltrate digital devices to eviscerate the human race. The only way to counter these codes is to play...

After the meteorite "Artemis" collapses on the moon, an unidentified phenomenon affects humans: the "Reproductive system disease". 12 years passed and mankind has done research in the field of cloning and...