Benio quickly becomes the center of attention after transferring to Rokuro and Mayura's middle school. When a Kegare attacks between classes, Benio decides to leave while Rokuro claims that their studies should take precedence over exorcist duties. But is that how he really feels?

Rokuro Enmado has great talent as an exorcist, but because of trauma in his past he has given that pursuit up. That's when he meets Benio Adashino, head of the famous Adashino exorcist clan, who has moved to Tokyo from Kyoto. What will become of these two after their fateful meeting?

Benio has moved into the Seika dormitory, which puts her into conflict with Rokuro after their unpleasant first encounter. Soon a strange individual arrives at the dorm clad only in a pair of underpants. This turns out to be the leader of all exorcists, the Chief Exorcist Tsuchimikado Arima. After inviting the members of the dorm to the Five Mirror Chamber, he asks Rokuro and Benio to battle in front of exorcist authorities from around Japan. Benio wants to test Rokuro's strength, but he still wants nothing to do with being an exorcist.

When the kids from an elementary school soccer team are suddenly transported to Magano by Kegare, Rokuro joins Benio, Atsushi, and Shinnosuke to go to Magano and save them. But in the middle of the battle, painful memories overwhelm Rokuro, and he's unable to fight. Just then, one of the highest ranking Exorcists, the "Vermilion Bird" of the Twelve Guardians, Ikaruga Shimon, appears.

The Twin Stars head down to Nagoya and encounter a baseball stadium that has been taken over by a Basara.

With Benio constantly leaving school for no given reason, Mayura starts to worry about her new classmate. And Rokuro starts getting back into the swing of things by joining the others on a regular Kegare exorcism.

Subaru of the Twelve Guardians thinks that Benio and Rokuro need to understand each other better, but the Twin Star Exorcists aren't convinced and insist on conventional combat training. The debate comes to head in the form of a game of hide and seek: if Benio and Rokuro can track Subaru down before sunset, she'll provide the training they're asking for.

When Ryogo runs into more trouble than expected during a Kegare exorcism, a desperate Rokuro turns to the one person he thinks can really help: Benio.

Kinako wakes up alone in the Seika Dorm after the trip to Kyoto. As he searches for Benio, he reminisces about how they first met.

After learning about his true nature from Arima, and what it could potentially mean for the entire world, Rokuro makes a decision.

After being confronted by Yuuto, the Twin Star Exorcists are desperate to get stronger in preparation for future battles, but Benio's old master Subaru has a different kind of training in mind.

The hellish world of Magano, home of the Kegare, has begun to leak into our reality. Can the Twin Star Exorcists stop the growing influence before it spells doom for the town of Narukami?

The Twin Stars' tour across Japan to seal the Kegare-spawning Dragon Spots makes a detour to an amusement park, and Sae makes a new friend that Benio and Rokuro aren't happy about.

A Dragon Spot in Kumano results in a brief detour before the Twin Stars and Sae arrive in Kyoto, and they meet the strongest member of the Twelve Guardians.

With the secret behind the Dragon Spots and Sae's origin revealed, the path to salvation is clear. But are the Twin Stars willing to part ways with the girl who's become like a daughter to them? And if they're not, can they help the Twelve Guardians resist the flood of Kegare coming through the Dragon Spot?

Arima returns to Tokyo to give the Twin Star Exorcists a trial to test their skills. But it's not the kind of test they were anticipating, with an unexpected reward.

It's Tanabata at the Seika Dorm, and everyone is reminiscing while they think about what their wishes for the future will be.

Ryogo gets introduced to an attractive young exorcist by Fushihara, an exorcist from the neighboring area, causing him to question whether or not exorcists should pursue romantic relationships in face of the otherworldly threats that menace their lives.

Two years have passed since their battle with Yuto, and the Twin Star Exorcists have gotten better with age. But when they find something unexpected in Magano, there's no telling what it could mean for their future.

The Twin Star Exorcists meet a pair of twin Basara brothers, whose teamwork might be a match for our heroes' powers... And the mastermind behind the Dragon Spots finally reveals himself.

Mayura and Benio debate whether or not Rokuro should continue fighting, and an unpleasant figure from Rokuro's past arrives to test his renewed dedication to being an exorcist.

Seigen attacks Yuuto, which proves useless. Yuuto fatally wounds Seigen who casts a barrier around the Twin Star Exorcists and the fainted Mayura. Seigen resolves to blow himself up; however, Rokuro and Benio escape from inside the barrier, which again Yuuto congratulates. Seigen is saved minus one arm and Rokuro manages to land a punch on Yuuto who is shocked. He then announces that he will wait for Rokuro's answer (whether he will join Yuuto on the dark side) at a place where there are precious memories for the both of them: Hiinatsuki Dormitory. Seigen and Mayura were hospitalized: Seigen undergoing surgery and Mayura still unconscious. Jissama has received information that the Twelve Guardians has been mobilized to destroy Yuuto and he gives Rokuro a package that Seigen had been wanting to give him. Inside, there is the black exorcist uniform that Seigen wore. Rokuro wears the uniform and announces to Benio that he will defeat Yuuto even with the Twelve Guardians mobilized.

The Twin Stars head out of town to seal a Dragon Spot, and Benio is confronted with the infamy caused by her brother.

The head of the Exorcist Union is attacked by the Basara responsible for the the Dragon Spots. And the Twin Star Exorcists finally learn just where Sae came from.

Chijiwa has wrapped Shimon, along with the rest of the school, in his marionette strings to force them to attack the Twin Stars. Can Rokuro, Benio, and Mayura find a way to free their friends, or will they be forced to fight?