Megumi Sasano (笹野 芽実, Sasano Megumi) is a composer born in Izumisano City, Osaka Prefecture, who is currently based in Japan and Los Angeles. After graduating from the university in 2010, she moved to the United States, where she currently resides.
A high school girl finally gets her own apartment, but she has to share it with the most popular boy in school. No one can know they're living together.
Okitegami Kyoko is a beautiful private detective who has a deep love for money. She is also known as the Forgetful Detective. Her memory is reset when she sleeps at night, which means she can strictly adhere to confidentiality requirements. She solves all her cases within a day, whatever they may be. She is the world's fastest detective! There is something really important that Kyoko must never forget, and it is written on her body with a magic pen. “I am Okitegami Kyoko, detective. My memory is reset after one day.” Meanwhile, even though Yakusuke Kakushidate has a crush on Kyoko Okitegami, he is always mistaken by her as the culprit of a case. No matter how close he gets to Kyoko, she totally forgets about him by the next day.
The story starts off with a face-off between two rival heroes, ZET and ALPHAS, and then traces their origins - Jin Kanzaki, a young man with the ability to transform into a superhuman being known as ZET, and Kouga Amagi, a young man with a strong sense of justice who uses technology to fight as ALPHAS. The fates of these two men and those around them intertwine as they fight to protect mankind and destroy monstrous abominations known as Players.