Kei Kusanagi is a shy and introverted eighteen year old, who spent three years in a sort of coma, which he calls "Teitai" or "stop." The fact it happens frequently crash and loses consciousness when under pressure. I lost three years he moved from his uncle Minoru, a doctor, and again to go to school. None of his friends know of his problem has fifteen years, and everyone thinks like them.
The Onegai Teacher opening theme was "Shooting Star" by Kotoko. One night he sees a vortex in the lake and immediately after witnessing the materialization of a beautiful woman. Run away scared and wakes up the next day, not knowing if what you saw is true, or it was just a dream, until he sees the same woman with a surprise entry in its class and present as their new professor of modern Japanese.