After i played Kagerou Days on extreme, a text box popped up on the song selection menu and a ribbon icon appeared on Yubikiri. All i could understand from the text box was that it mentioned DP. Does anyone know what this means? I forgot to get a picture of it, but if it happens again i'll take one.
Note that the ribbon icon only appears for the next selected song once. For example, if it pops out on Kokoro but you decided to play Knife, The icon will no longer be in Kokoro after you finish Knife. Also regardless of the difficulties the bonus DP still applies.
Also of note is if you play the game and Retry, that voids the Ribbon too. It's a truly one time-only event. (but it happens so frequently, you can ignore it)