That Word does not exist. If the searched Word is heterosexual, then regards sexual relations between persons of different sex (male and female). On the contrary, homosexual refers to sexual relations between persons of the same sex.
I agree with Manuel Penichet P, and think it is a mistake of typing. If not, it can refer to the sex of the heroes, or with them; from the latin heros, ois ( 41 hero; and sexus ( 41 sex;. ; )