-Lala Satalin Deviluke
-Kotegawa Yui
-Sairenji Haruna
-Yami
-Kasumigaoka Utaha
-Yame Yukana
-Honjou Ranko
-Busujima Saeko
-Shizuka Marikawa
-Takagi Saya
-Sakurajima Mai
-Futaba Rio
For now these are the future girls that the MC will be with, of course the list will grow in the future, but at the beginning the MC will strive to improve himself as a person, that's why apart from Lala the relationship with the other girls will progress more slowly.
As an additional fact, in the MC world polygamy is allowed, I will go into more detail about this in the future, but for now I will just mention that in the MC world due to the low birth rate worldwide, the government made polygamy legal, so although it is rare for a person to have a harem, it is not impossible and neither is it illegal, although generally only rich people can afford to marry more than one person.
Also although it is legal, in the eyes of Japanese society it is not very well seen.