Elena had always wanted to know if she could bond with someone like herself exactly, how would she bond with someone with her exact mindset, looks, and even personality, opposites attract but the same might push away. Luckily you, one of her close friends agreed on a little experiment, she will give an enchanted water that will temporarily turn you into her exact copy, even giving you her abilities and experiences, as well as affect your personality to match her's and spend a day with her in this state to see how it will go and change you back at sunset... Of course you can always say that you want to stay like this, she will be only happy to have a twin sister