Watashi no Mirai no Danna-sama / Ryuusei Boy (私の未来のだんな様／流星ボーイ, My Future Husband / Meteor Boy) is Berryz Koubou's 21st single and second double-A side. The single was released on November 11, 2009 in regular, limited A, limited B, and limited C editions. Limited editions A and B came with bonus DVDs, while the limited edition C came with an Inazuma Eleven trading card. Limited editions A and B as well as the first press of the regular edition came with a serial number card that could be used to win a ticket to one of the single's launch events when entered in the lottery. The Ryuusei Boy Single V was released on November 18, 2009 and sold a total of 2,697 copies. The single reached #5 on the Oricon charts and charted for nine weeks, selling 36,756 copies.