|Mode||Regular and Extra|
- This song was released for a limited time and is only unlockable via event mode, from noon 21 Jun 2019 to 8 PM, 25 Jun 2019 (UTC+8), and was unlockable with frags until 8 PM, 30 Jun 2019.
- This song requires 39000 frags to unlock all difficulties (Hard, Mega and Giga).
- The character Eileen and BG part Kokytos can be obtained after playing this song in Event mode.
- しーけー's Track of Dynamix submission.
- Cocytus or Kokytos is a river in the underworld in Greek mythology. Cocytus flows into the river Acheron, on the other side of which lies Hades, The Underworld, the mythological abode of the dead. There are five rivers encircling Hades: the Styx, Phlegethon, Lethe, Acheron and Cocytus.
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