Ω4

==Trivia==
*ω4 is the final boss song of O.N.G.E.K.I. PLUS, and the second-earliest song in the game to eventually receive a difficulty rating of 15 (after being re-rated from 14+).
*When the player's language is set to Chinese, ω4's name is displayed as "w4".
*Mia is present on the song jacket in her school uniform.
== References ==