In the relatively distant future, the other two member of the
optional harem will also be interested in one another (can't say more than that for spoiler reasons), so...Technically a poly harem? There will be optional lesbian content within the optional harem. There will also be optional lesbian content (between those characters and not involving the MC, Maria, or Emilia) if you don't do the harem content. Lots of options, but almost all of them are in the distant future. At least for a while still, this story is very focused on MC and Maria, with a secondary (but not insignificant) focus on Emilia and her dynamics with both of them.