25話見とくといいね
Steins;Gate_ Oukoubakko no Poriomania (OVA) Part 1/2
http://www.youtube.com/watch?v=gylwoxYTbzw
Steins;Gate_ Oukoubakko no Poriomania (OVA) Part 2/2.
http://www.youtube.com/watch?v=TV1gpaq1HPo