Age: 18 Height: 155 cm Kei Kusanagi is living the life of a fifteenyearold boy. He has a unique disease which causes his body to shutdown into a deathlike state whenever he becomes too stressed or depressed. He calls this a standstill. The amount of time he remains in a standstill is random usually lasting a few minutes to a few hours. However one time he went into a standstill and didnt come out for three years. So although everyone thinks hes 15 he is really 18. In the anime Kei discovers that his new teacher Kazami Mizuho is actually an alien whose mission is to observe Earth. Due to a big misunderstanding Kei has to choose between letting her secret out or getting married to her he chooses to marry her. At first he is hesitant about the whole ordeal but eventually he falls in love and what ensues are comedic and dramatic situations which he must overcome in order to live a happy life with his new wife.