So, for what i´ve seen in this demo after playing for an hour and half, i can share a bit of what i learned:
Now the MC has levels, each level gives a bonus (from the two things i chosed while playing, money and memories are the buttom choices)
-Now there is a time system, moving arround advances time by 5 minutes, interactions show how many minutes they take.
-The girls move from place to place each hour, the MC can talk to them up to four times a day (Morning, afternoon, evening, night) for an hour each time, when talking there is a baar at the top that gets completed as they talk (i only managed to made Myuki reach 100% once, i don´t know what´s the purpose but at 80 you can ask them to show their pantys).
-Events have conditions (i don´t know Japanese, so i couldn´t do them) i can infeer that one condition is love level, but the other i dont know.