Talk:Monster Musume: Everyday Life with Monster Girls Online/@comment-26961576-20160818220454/@comment-27615277-20160818222504

you have reached the limit to how many girls you can have. Level up some of your better girls by using up some of your weaker normal girls... or or kick some out. See:

http://dailylifewithamonstergirl.wikia.com/wiki/Tutorial:_How_to_Play#Monster_Musume_.28.E3.83.A2.E3.83.B3.E5.A8.98.29

subsections 3.3 and 3.4

If you want to RAISE the limit, you have to buy extra bedrooms in the store for 1 ruby each. Each extra bedroom lets you keep 5 more girls.