Fumiko and Fuuka are trying their hardest to become adults when Kaede comes by and suggests they go for a walk as part of the walking club. The problem is, compared to Kaede, the two Narutaki twins are like little kids, no matter how hard they try to be adults. Motsu even points out that the three of them together are like a parent and her children. Since Kaede advises the twins to refine themselves on the inside to become adults, the three go to the school’s library island to find out how. Meanwhile, Negi and company are also at the library island because of the red object that came from the fairy incident which they think is related to the Star Crystal. Earlier, Negi had sensed that they were being watched, but all he could see was the black rose petal that floated into his room. Now, as they are led through the library by Nodoka, Setsuna is warning Konoka not to touch the books. Actually, Setsuna is the one who touches a book after she finds some on the Shinmeiryuu, triggering an arrow trap that she has to deflect. The group then encounters an old man named Yamada who Nodoka says knows everything about the library, but Yamada proceeds to fall through a hole in the ground.
It is the twins and Kaede who next encounter Yamada, and he informs them that there is a book to allow them to grow up. The girls proceed to search through various rooms, but have no luck finding what they’re looking for. Kaede eventually runs off and gets separated from the twins in a desert room. Negi and company aren’t having much success either, though Asuna has managed to find a Chupacabra book. Kamo suggests that they use Nodoka’s artifact to figure things out, but Negi’s first try at pulling out a card results in a botched attempt. After feeding Nodoka and trying a second time, they manage to get the right outfit. But when Negi asks Nodoka to look up the red object, she’s unable to do so without a name. Nodoka’s powers eventually wear out and the group is back to square one. However, Negi then senses someone watching them again and this time notices a shadowy figure running across the tops of some bookshelves. Seeing the black rose petals again, Negi is once again reminded of his father, so he gives chase aboard his staff. He uses his magic to try to stop the person, but all that does is blow a hole in the distance.
From the dust emerge Fuuka and Fumika, who now realize that Negi is a mage. He has no choice but to tell them everything and to ask them to keep it a secret. As for them wanting to grow up, Negi thinks that they’ll definitely become attractive adults. The two girls then ask Negi to enact provisional contracts with them, and he consents. After the kisses, Fuuka and Fumika agree that there was an adult taste. Upon returning to the dorm, Asuna gives the twins Chupacabra t-shirts and declares them members of the Chupacabra Research Society. As they’re talking, a mystery person outside their window suddenly speaks up, remarking about how these people are Negi’s partners. This is the same person Negi had been trying to chase at the library, and he introduces himself as the Black Rose Baron before he disappears in a sea of black rose petals.
I guess this episode is the anime’s version of the Library Expedition Trip of the manga. Fortunately, Fuuka and Fumika weren’t nearly as bad as I had thought they would be, and the producers actually advanced the story a bit. This new Black Rose Baron definitely does not appear to be Negi’s father, nor any character I’ve seen from the manga, though there may be some connection yet. It’ll be interesting to see where they go with this. I guess I’m more disturbed by the fact that the twins were Negi’s next provisional contracts, instead of, say, Yue who had been fifth in the manga. Either way, it seems pretty clear that by the end of the series most of the characters will be Negi’s partners.
Interestingly enough, they went back to the first version of 1000%SPARKING! with Asuna, Negi, Setsuna, and Konoka. They also changed the ED a bit, but I didn’t really pay attention because I haven’t really liked that song.