Blue Seed

To the dismay of the TAC, Kaede Kunikida suddenly disappears. Meanwhile, the young school child Momiji Fujiyama is attacked by a strange man, hellbent on killing her. But why is he doing this? After surviving the attack, Momiji's school is filled with monsters, but the strangest thing of all is that people think she's some sort of princess.

Things get even more confusing for poor Momiji when a man named Mamoru Kusanagi arrives, but when she learns that he is there to protect her from these strange monsters (Aragami), she feels safer. Little does she know Kusanagi hasn't decided to save her or sacrifice her. Meanwhile, the TAC rush to the scene with an experimental creation that may defeat the terrible Aragami.

After being sent to Tokyo, the Aragami-target Momoji discovers that she is now under the care of the TAC. She knows these monsters are terrible, evil things, and really wants to help, but can't find out how to. The TAC soon discover that their base isn't as safe as they thought when an Aragami breaks in and attacks.

Rule-altering TAC member Kome Sawaguchi is angry when she is stuck babysitting the newest addition the team, Momiji Fujiyama. Soon the team discovers that Momiji's blue seed can track down Aragami and something terrible may occur soon.

Kusanagi is outraged when Mrs. Matsu-Daira sees Momiji as a live specimen, free to experiment on her. Just as Momiji is about to confront Kusanagi on the threat he made to the lady and her son, a strange jellyfish emerges from Tokyo Bay and things heat up.

TAC Member Yoshiki Yaegashi feels that the others seem to help out a lot more and that he is not needed, and when kind-hearted Momiji tries to help out, she discovers something about him that she could've lived without knowing. After trying to help Yaegashi restore his confidence, the two set out to track town an Aragami.