The Activation
E1
Nakahito Kagura and a few friends of his decide to investigate an abandoned house. Since Nakahito's family has a history of magic, they decide that Nakahito should go with them to take care of the rumoured mad-scientist living there.
A One-Master Kinda Gal
E2
Dr. Amagi attempts to coerce Dr. Ayanokoji into working with the Japanese military. Meanwhile, Amagi mistakenly grabs Nakahito and Kurumi has to rescue him.
Cold Saki
E3
A new character by the name of Dr. Brandow joins the Imperial Army, even more interesting is it seems as though he has been previously part of the Steel Angel Project. Meanwhile, Nakahito must now become accustom to rude awakenings, while Dr. Ayanokoji is convinced the Imperial Army will not be able to awaken the second Steel Angel prototype.
Don't Hate Me!
E4
The Imperial Army's preparation for the second Steel Angel's completion draws closer. Meanwhile, Nakahito finds himself haunted by the words of Dr.Ayanakoji stating that only Nakahito has control over Kurumi.
Warm Saki
E5
As Kurumi finds herself forced into battle with Saki, she hesitates, giving Saki the upper hand. In an effort to help, Nakahito seems to just make things worse and discovers that his words put Kurumi in this dilemma. As the fight continues it seems as though no one can help against the wrath of Saki. What will be the final outcome?
Love Shack
E6
With the kidnapping of Dr. Ayanokoji it seems that in return a new (and unexpected) member has joined in his place. Meanwhile, Saki quickly redeems herself as she helps to rebuild what she had at one point destroyed.
Playing Doctor
E7
The group"s trip to Izumo comes to a halt when Nakahito gets a stomachache. Meanwhile, Kurumi, Nakahito, and Amagi go see a doctor, but this doctor isn't your normal kind of doctor.
Tsunami
E8
A large boulder is blocking the path of the train to our comrade’s destination, Dr. Amagi searches for other transportation while the army tries to remove the boulder. Meanwhile, Nakahito learns more about Dr. Ayanakoji's past from Dr. Amagi.
Fireworks
E9
The group spends the night at a fireworks festival, but the sparks really fly when Nakahito is kidnapped and Kurumi sets off to find him.
Triple Threat
E10
Kurumi finds herself fighting Nakahito's kidnappers, the Steel Angels Kaga, Tsunami, and Kaori.
Cinnamon Cookies
E11
A couple of incidents get Kurumi thinking that there is something going on between Nakahito and Saki.
Karinka
E12
Kurumi, Nakahito, and Dr. Amagi go to Kyoto to find Saki, who is beaten badly by another new Steel Angel, Karinka.
Second Sister
E13
Kurumi fights Steel Angel Karinka. Can Kurumi's Mark II Angel Heart prevail over Karinka's two hearts?
It's Not Fair
E14
Karinka disguises herself and tries to find out Kurumi's secret.
Dark Wings
E15
Karinka finds herself working as a waitress with Kurumi and Nakahito in an effort to find out the secret to Kurumi's power.
Our Lips Are Sealed
E16
Karinka's new goal is to get a kiss from Nakahito so that she can become more powerful than Kurumi.
Mikhail
E17
Kurumi and the gang finally arrives in Izumo, where they learn many secrets about Dr. Ayanokoji. Also, Nakahito meets a young boy...
Lies
E18
Mikhail tells Nakahito about the potential danger of Kurumi's Angel Mark II Heart.
Storming The Base
E19
Kurumi, Saki, Karinka, and Dr. Amagi arrive at the Academy Base to rescue Nakahito. However, the Steel Angels fall into the Academy's traps, and Dr. Amagi meets face-to-face with Dr. Walski.
Avenging Angel
E20
An angered Kurumi continues her search for Nakahito, but she runs into and fights Steel Angel Mikhail.
When Angels Die
E21
The battle between Kurumi and Mikhail continues. However, Kurumi is being consumed by demonic energy to the point that she grows black wings.
Hell's Angel
E22
After beating Mikhail, the demonically possesed Kurumi attacks dr.Walski's base!
Crime and Punishment
E23
Kurumi (in demon possesion) attacks the academy base, the damage is fatal. In order to stop Kurumi, all the steel angels drain themselves to the point of de-activation to power the ultimate weapon to stop Kurumi's destructive powers.
Kiss
E24
Nakahito makes one final attempt to stop Kurumi from destroying everything.