It seemed that the last Cave online shop in late May had the extra copies of Dodonpachi Saidaioujou OST CD in addition to other stuffs that were tributes to other Cave games. According to the tweets on Twitter, the release date of the soundtrack CD was likely to be May 26th which was late May but someone already had a copy of this soundtrack CD earlier and then posted the video of the Image Song to the video sharing site. Unfortunately from what I heard, this image song is like lazily written in lyrics or something as if this image song is not as good as Dodonpachi Dai-Ondo which is somewhat the best Cave Image Song. Another one other people might have heard of was Muchi Muchi Pork Image Song as well as the Image Song of Pink Sweets Ibara.
Now that we’re entering June quite soon which there will be some global shit going on after this.