What Michiru-sama is playing is the cello. Osabu played the cello when he was in school. He said to me, "The cello is a good match for Michiru-sama. Since skilled people spread their legs wide, you can tell from the way Michiru-sama spreads her legs that she's a pro." I didn't know that! I dedicate this picture to Osabu and all the Michiru fans.