Series Synopsis
One night, high schooler Kei Kusanagi (voiced by Soichiro Hoshi) is lying peacefully by the side of a lake. Suddenly there is a bright flash of light and something crashes into the water. Taken aback, Kei is shocked by the mysterious appearance a young red headed woman. The events of the night are too much for the kid and he falls unconscious.
The next morning, Kei wakes up in his own bed and believes the night was only a dream. At school, news spreads of a beautiful new teacher. Lost in thought, Kei is not paying attention when a young redheaded woman named Mizuho Kazami (voiced by Kikuko Inoue) walks into the class. Kei instantly recognizes her as the person he saw at the lake.
Once school lets out, Mizuho confronts Kei and tells him that she is an alien sent to observe the Earth. Instead of being afraid, Kei takes pity on Mizuho who is now alone in her new surroundings.
Kei promises to keep Mizuho’s identify a secret and offers one of his own. While he might look like a fifteen-year-old, due to a disease he has dubbed standstills, Kei is actually eighteen. The two quickly become close, even to the point where it is mistaken that they are in a relationship.
To save her job as a teacher, which could potentially reveal her secret, Kei agrees to disclose his true age and marry Mizuho.
