Update: The single will include two new songs in additional to the title track. (
Source) The songs are
Meijitsu Tomoni (Izawa) and
Gyokazu no Wana (Ukigumo). I guess the 4-character thing is happening now.
If
Akai no Doumei was indeed something purely written for the Olympics, the inclusion of two other tracks is a nice touch. I thought the days of a proper single were behind us! TJ hasn't released a single in this format since... 2007?