of course they are all girls...
@Esper "Harem" in the anime/manga sense is different from the ACTUAL definition. Harem in anime/manga is basically 3+ girls who are not tied to another man (i.e. not someone elses girlfriend or wife) that are part the MC's group that are potential sexual candidates. And by that i mean, they are not related to the MC by blood, "daughter" age or a grannie. Doesnt matter if the MC has or has not the intention of sleeping with them, just that it COULD happen.
And this is because sex is a no-no in like 90% of anime and we end up with a shit ton of series like To-Love RU where the MC has never had sex, will never have sex, and is surrounded by like 20 girls who would be willing to, but the MC doesnt want them.