Recklessness, Labyrinths, and the Avatar Instrumentality Project
The first we have Minami fussing over a photo in Akihisa's hand, then challenging him to a mock ESB, but the ESB field glitches, and the beings are acting weird, especially Akihisa's, and have taken adult versions of themselves. The principal sends Akihisa in, with his friends in the control room guiding him. But little did he know what was he going to face as his shoukanjuu clambers up the vent entrance...
Aired 25/02/2010EP 8 - Recklessness, Labyrinths, and the Avatar Instrumentality Project

Baka and Test - Summon the Beasts
The story centers around Akihisa Yoshii, the "baka" of the title. His academy rigidly divides up the student body into classes based on the results of tests. The prodigies are in the A class with reclining seats complete with air conditioning, but Akihisa is in F class, the lowest rung of the school ladder which is furnished only with low, decrepit tables and worn-out straw tatami mats. A girl named Mizuki Himeji is actually one of the smartest girls in Akihisa's sophomore year, but she had a fever on test day and was pigeonholed into the F class. Besides Mizuki (who Akihisa secretly adores), the F class also has Yuuji Sakamoto, the class president who has been Akihisa's friend and partner-in-crime since the freshman year.
The school happens to have developed experiments to summon fantasy creatures, and Akihisa decides to rally F class to take on the higher-tiered classes and seize their perks. The F class uses the summoned creatures in an all-out battle for school supremacy.