The Akabanetou Investigation Squad gathers information on okatanas that have been scattered. One of the members named Asakura Mihono spends her days carrying out missions and training with the rest of her squad. A few months after the End of the Year Great Disaster, a new Toji arrives to fill in Suzumoto Hana's place while she's recuperating. Meanwhile, Etou Kanami and Juujou Hiyori headed to Enoshima on Origami Yukari's orders and run into a humanoid aradama. They engage in battle with the aradama, but it manages to get away. The Tojis are ordered to investigate the humanoid aradama, so Mihono's squad also joins in on the investigation, but...
If you choose me, Mihono-chan, 
I'll do my best morning, noon, or night!
إن اخترتني يا ميهونو-تشان
!فسأبذل جهدي في أي وقت من اليوم
Wenn du mich wählst, Mihono-chan, werde ich
morgens, mittags und abends mein Bestes geben!
¡Si me escoges a mí, Mihono,
me esforzaré de mañana, tarde y noche!
¡Si me escoges a mí, Mihono,
me esforzaré mañana, tarde y noche!
Si tu me le demandes,
Se scegli me me, Mihono-chan!
Ci darò dentro mattina, pomeriggio e sera!
Se a Mihono-chan me deseja, não importa se
é de manhã ou de noite, eu vou com tudo!
Ради тебя, Михоно, я готова потеть
хоть утром, хоть днём, хоть ночью!