AI[UE]OON is a winning submission in Arcaea Song Contest 2019.
According to MYUKKE., "Aiueoon" means "eternal evolution". The name combines the Greek word αἰών (aion, lit. "eternity") with the Japanese word 上 (ue, lit. "higher").[1]
Nitro explained that AI[UE]OON's Future chart is a throwback to the beginnings of Arcaea, with a more classic style of charting.[2]
Nitro also mentioned that the chart represents upwards movement, in contrast to the downward movement of FREEF4LL.[3]
