I asked Yuji Takenouchi about the composer of Level 1 Warning. He told me that one was also done by Ika-chan.
https://soundcloud.com/missingsoul/level1
Edit: Yuji arranged another track from the game. His description says Yuko Kurahashi was the composer of "Wavelet".
https://soundcloud.com/missingsoul/wavelet
Also, it should probably be noted that Mutsuhiko Izumi included "Swing, Swing~"A" Jam Blues" and "Red Sun" on his album
Third. I'd say it's pretty likely those are his tracks.