Punipuni to Sarasara -Arui wa Mokei Heya no Shounen to Shoujo ni okeru Hyoumen Chouryoku to Mousaikan Genshou-, Punipuni to Sarasara: Arui wa Mokei Heya no Shounen to Shoujo ni okeru Hyoumen Chouryoku to Mousaikan Genshou, プニプニとサラサラ―あるいは模型部屋の少年と少女における表面張力と毛細管現象―