The whole RFA had all been wondering if there was a special reason why you were originally chosen by Unknown, or Saeran to be a part of his plan. Was it Rika who choose you? Or was it just a coincidence? Saeyoung also did a thorough background check on you at the very beginning, but there seemed to be nothing unusual about you or your background. You're simply a freshman at Uni and there was nothing that stood out about you...

Or was that the unusual part about you? That you're so ordinary and normal? Like you never posted photos nor mention anything about your family. You only uploaded random photos every now and then. You never really complained about not being able to go to Uni either. Why were you so calm being in such a situation? Like talking and working with a group of strangers, with a "trust fund kid" - a super-rich guy who is obsessed over his cat; a narcissistic actor, a naive game addict, a super assistant, a half blinded photographer and an alienated weird hacker. Recklessly going to an unknown apartment lead by a complete stranger, with no hesitation nor fear. How could you be so accepting when they said that you shall work in this Rika-who-knows-person's position and help them organise a charity party. You could simply leave and delete the app, and ignore all of that.

But you chose to stay. To live in a seemingly dead person's apartment, to help them organise a party and be friends with everyone in the group. How could you be so calm and chill when Seven told you that the special security system was actually a bomb, and you're living with it? He expected that you would get really upset and mad at him. Yelling and swearing and hating him were all possibilities that could have happened. But you didn't do that. You acted very calm and cool, while managed to encourage and thank him for all the efforts and hard work that he has done.

Are you an angel?

Well, of course not. Idiot. ε-('∀｀; )

You are definitely not an angel. Well, not the one he was thinking about. But you're The Fallen Angel that everyone has been chasing after, especially that Hackers Chasing Group but apparently there's no trace of you on anything. Just like Seven, your identity is a complete mystery. No one knows if The Fallen Angel is a female or a male, young or old, how do they look like, or what's their real name. But who would have thought that you are an undercover cop, who's currently on their days off?

However, you didn't really know why he chose you. Or actually, your twin sister, who's currently missing. All you have of her was a cell phone with this app on the last used list. And as soon as you clicked on it, there's this Unknown person who texted you and told you to go to some stranger who lost their cellphone's apartment. You haven't really told anyone about this yet, as a lot of things have been happening. But originally, the app was the only clue you got to find out about what happened to your sister. You joined the RFA not because you wanted to be friends with them but to find any clues about your sister.

Unlike what the others have thought, you did not spend all your time in Rika's apartment lying around, doing nothing but holding the phone, talking to them and answering emails from the guests. You actually spent a lot of time looking for any traces of your sister's unusual disappearance, going through her diaries and anything you could find in her room.

Since you have been working as an undercover cop for years, you didn't get a lot of chances to talk to your sister - the only family you have. You still watch over her from afar, but getting in touch with her was almost out of question. The only way that you have always used to contact her was through emails, secretly delivered to her with other random stuff, like flowers, milk, chocolate, newspapers, etc.

When you received the news that your sister hasn't returned for 3 days, you started to panic since you know she's a very good child. Sleeping over or going out late at night isn't really her thing. She prefers to stay indoors, read some books or watch some movie better than going to club or bar like other people with the same age as her. You asked your boss for an emergency leave and immediately you flew all the way back to Korea to where your sister lives. And all that's left was her cell phone and everything else in the room. It seems like your sister took nothing with her, even the purse was on the table. Where did she go?

Now that you are locked into a room at the Mint Eye headquarters with Seven, after a not-so-friendly encounter with Saeran, Seven's twin brother; while Seven is working on opening the door, you secretly copying all of the data from the computers in the room for further investigation to see if there's anything related to your sister's case. Just a few minutes before Seven's done with hacking, your data is also ready. You quickly hide the USB into your shoe sole and join in the chatroom and talk to everyone else, as if you had nothing else to do.

They better have some information about your sister, since Mint Eye is not a name that you just found out a while ago through those creepy emails, it's actually also mentioned in your sister note on the cellphone. Whatever's going on, you have to find out.