Update: As reported earlier, Level-5's Guild 01 is a collection of four games, each being developed by a different creator. Here are some details on Kaiho Shojo, which is being made by Grasshopper Manufacture's Suda 51.
Kaiho Shojo is set in Japan 100 years in the future. To stop global warming, people have started to use a new natural energy know as Shinjuu. An invading country seals off the Shinjuu source, starving Japan of its energy, then occupies the country.
President Shoko, the second president of "New Japan" takes matters into her own hand. Using her Kaihoki ("Liberation Machine") Kamui, an 11 foot winged mech, she face off against the enemy.
Shoko is the "shojo," or "girl" of the title. She's just a highschool student, but managed to become president anyway. Her father was the first president, but he was assassinated.
We don't know too much about Kaiho Shojo's gameplay, but it is said to be a shooter. You make use of the touch pen to control the Kamui mech.
Based off the screens in Famitsu, Kaiho Shojo looks pretty compelling for one fourth of a game. It has animation scenes from animation house Bones.
Guild 01 also has games from Yasumi Matsuno (Ogre, Final Fantasy XII), Yoot Saito (Seaman) and comedian Yoshiyuki Hirai. We'll hopefully get details on the other games later in the day.
Link: http://andriasang.com/comyj7/