Way to access 1: MM TP 100 all the songs used in the megamix once for each and charge the battery of your device to 100% ,then email 999 any pictures about Cytus to Rayark ,after that, control 99.99TP on L2 and L3. Repeat those steps for 87 times then the FDFD(complete song of freedom dive) will be accessed by sliding the word "freedom dive"(chapter 10) upward ,Please MM it 10 times continuously, or the loop will be restarted. After all, you will get this song in a chapter M (hidden chart of Storia) Way to access 2: Send email to Rayark with the text "Ice is a good artist" and you will get a 6-digit-code and make the exact score same as the code in any song , then you can unlock it at the same place. Way to access 3: Give Rayark Ek's phone number to access it.
Way to unlock : MM Freedom Dive hidden 9999 times or get 0 points on every L songs each 999 times, then you can see The Beginning become this(if you do 1st way) or find it in chapter F(hidden chapter if you do 2nd way)