he is my bat boy character Kuraresu with a big koinobori(the carp pennant) and the simple green background and I draw this art in 2011. in Japan in around the end of April to the early of May people put up the carp pennant and they fly up by the wind and it looks they are swimming in the air. on this art I feel the Koinobori looks like it's living and it's summoned by him. I really love the character's expression and the position of the koinobori, and the colors.