shichigoro-shingo drew the cover art for the collaboration song “M SPECIES” by AA=xKj (AA= (aaequal) (Wikipedia(En) 
) with Kj (from Dragon Ash) (Wikipedia(En) )).
It has been distributed on iTunes, Amazon and so on.
Official Website of AA=
www.aaequal.com
Official Website of Dragon Ash
dragonash.co.jp