Ichika Orimura is attending the Infinite Stratos Academy as he is the first male to ever pilot an IS where he becomes a sensation among the all female students of the academy. With his homeroom teache…

Ichika is told by Chifuyu that he will be provided with his own personal IS for his match against Cecilia, a rarity since there are only 467 IS Cores that were created by Tabane Shinonono, Houki's old…

Cecilia takes a liking with Ichika and gives the position of class representative to him instead much to Houki's chargin. The next day, Ichika meets Lingyin, the new transfer student from China who al…

Ichika and Lingyin battle in the Inter-Class IS Tournament but their match is interrupted when a mysterious IS attacks the arena. As Ichika and Lingyin hold off the IS so the audience can escape, they…

Houki has been given her own room by Maya and leaves in anger when Ichika is being dense about it but makes him promise to go out with her should she win the grade level individuals tournament, which …

After losing against him in a practice bout, Ichika has a training session with Charles, which is interrupted by Laura who wants to fight him, but refuses. On his way back, he spots Laura talking with…

Houki becomes pressured to win the upcoming inter-class tournament after her attempt to ask Ichika out escalated into a rumor that whoever wins the tournament gets to date him. As Cecilia and Lingyin …

The match between Ichika and Charles against Laura and Houki begins where Laura focuses on fighting Ichika and pays no heed to her partner Houki, who is soon knocked out by Charles. Ichika and Charles…

Houki calls her sister, Tabane, who reveals she has completed an IS called Akatsubaki just for her. After being hassled in the morning by Laura, Ichika goes with Charlotte to the mall to buy swimsuits…

After catching the girls listening at their room while Ichika is massaging her, Chifuyu has a talk with the girls about their feelings for her brother and gives them some advice. The next day, Tabane …

As Ichika and Houki begin their operation, the others notice how happy Houki looks, which prompts Chifuyu to tell Ichika to watch over her carefully. As Ichika and Houki engages in battle with the Sil…

While the girls fight Silver Gospel, Ichika has a dream where he meets a young girl and a warrior woman who asks him if he wants strength, which he agrees as he wants to protect his comrades. As the b…

Ichika had a prophetic dream involving all of the girls once again fighting an unstoppable foe. Later, Laura and Charlotte go clothes shopping in preparation for their date with Ichika…in which everyo…

Ichika may be good at fighting, but the new student council president sees a flaw in him, and she intends to fix it.

A twisted game of Cinderfella gets deadly serious, and Ichika finds himself once again at the whim of 5 beautiful women.

The mysterious woman is revealed to be Arachne, and she's after Ichika's IS. A new enemy reveals itself, and it may be too powerful for the girls to handle.

Ichika is forced to be the sole judge of a Maiden Battle, where the girls take turns trying to give him the best "service" possible.

Ichika's IS is malfunctioning, so while it's away for repairs Charlotte has agreed to protect him.

Ichika has to choose a partner for the next tournament. Naturally, all the girls think she'll be the one to get picked.

The girls find out who Ichika has picked for the tag tournament, and are not too happy, leaving them to train like they've never trained before.

A sudden raid by 5 anti IS units sends Ichika and the girls into a tailspin. During the fight, Tatenashi falls unconscious.

Amid speculation about how to improve their IS, Cecilia goes to each of her friends in search of the perfect bento lunch for Ichika.

The IS class goes on a leisurely field trip with the girls vying for Ichika's attention. While leaving, the class is attacked at their various locations by Phantom Task.

While Ichika battles Madoka's Black Knight IS, Tatenashi engages Squall atop a skyscraper. Meanwghile, Chifuyu and her students become trapped in a monorail containing a time bomb.