what do i have to do to get the key? i kept talking to her but she always says the same. And i bought the concert ticket, how and where do i use it? and i tried to date someone but every time i try to kiss they don't accept, i tried many possible ways, is there a trick?
You have to play through Arane's story to get the key. Your Quest log should have the leads to her events.
The concert ticket should allow you to start a new character story in Downtown.
For the dates you gotta pick the right answers for the character's personality and definitely make sure to bring a gift before trying to kiss them.