Generally speaking though, if you're trying to get every girl, Emma is one of the hardest, due to how easy it is to lock her content early on.
If Emma isn't for you, I would just say pick a girl and work from there.
I compare Emma in this game from Jill to BaDIK. I know it might not be that accurate, but it sort of is.
You can't be with anyone else if you want to be with Jill. (That goes for the same with Emma minus a couple of girls she'll accept, one of them being Bree according to the wiki)
But Emma's route is a slow painful slog, sort of like how Jill's was/is in BaDIK until she finally gave it up at the end of E8. When I pursue Emma, I don't talk to ANY of the girls minus the initial events with Sasha or Bree (Sasha moving in or the Bree 10LP phone event)
I know I could help them and be a friend to them (or any other girl) but I don't because I don't want to be constantly asked on dates which I feel very guilty turning them down for. I go to work, then go run in the park or spend time in the forest until it's late enough to go to bed. It's a rough playthrough since I don't do much to interact with anyone else, but that's my choice. Obviously I have to do the Sam events to get to Emma, but besides that it's a pretty monastic, hermit playthrough when I do the Emma route.
Emma's route really isn't that fun. The scavenger hunt event is pretty cool, but the sheer amount of dates you have to go on before they decide to be intimate gets pretty rough. Plus, if you don't do anything with the other girls, you have to constantly check the bookstore for sexperience books to be able to even get anywhere with Emma at all (at least that's what I do).
I for one would love to see Emma & Anna together in a threesome scene with Mike, but I know, due to the nature of Emma, that'll never happen.
It also seems like Hanna has some sort of monogamous thing to her too. When a new day changes over I lose something like 18 points every single morning, which is very hard to make up every day.