Hoppo saw(SFX) hoppuuThe sound effect is a play-on words of Hoppo's name and the fact that it's a balloon, or fuusen. So just as she goes "Hoppo," the balloon makes the noise "hoppuu," the puu from fuu in fuusen.early summer too! 初夏 can either mean early summer or the 4th month of the lunar calendar. Some might say this should be translated as June.