She's the main protagonist of the story, the usual female heroine of a shoujo manga. Komaki is the classic teenager student, polite and with a quite normal behaviour, which someday discover to have a very very developed sense of smell.. Soon she'll found out that this new ability came from the fact that she, herself, allowed an "alien" to stay in her body... She becomes friend with this alien, which she names "Hana". The story starts with Komaki having a boyfriend: Takayama, but, thanks to her ability, she comes to know about his cheating towards her, with her best friend. In the while she starts a friendship with Tsurumi, a classmate, which will be the one who try to cheers her up when she discovers her boyfriend cheating on her..
Lately, she develops to be in love with Tsurumi.