Bio
There are only a few things I know for sure about Junji after Supercar broke up. He has worked with a band called S.R.S in 2009. Specifically, I know he writes lyrics, but I'm not sure whether he's helping with the music or producing it or what.
S.R.S Albums:
'Sometimes' (2009)
'Wonder Song' (2009)
He's helped out with a lot of minor stuff it seems. This site contains a list of his latest 'works', which are really a bunch of albums he helped out with: