Is the alien inside Komaki's head. He said to have been sent to the earth to recover his comrades and study humans' reproductive system and way to think. Is assumed to be a male until when it's explained that his world has actually 5 types of sex-gender, and he should be asexuate but being of the "feminine" type just once a year (he is of the third type of sex). He really doesnt understand Komaki's way to think about sex, often arguing with her. Is shown to hide many secrets to our heroine, but they will all be explained when she will have a contact with Numa-sensei. Hana is the leader of the team of aliens sent on the earth and is searching for them.