Will this game have a proper harem ending?
I don't want to have to just choose a single heroine here... that's honestly kind of a huge turn off.
I don't really think so myself, but the plot kind of has this timespace multiplicity anyway so you can probably be in a proper harem in your own perception of everything, but the girls would be in a monogamous relationship with you on their own end
...That would be weird. Yeah. A proper harem would be best.