Episode list

After returning to his apartment from jogging, aspiring Mage Knight and flunking Hagun Academy student Ikki Kurogane walks in on a mysterious half-naked girl changing in his room. While being reprimanded and forced to apologize by Academy Director Kurono Shinguuji, Ikki learns that the girl is Stella Vermillion, a famous A-Rank Blazer who is the princess of the Vermillion Empire and his new roommate. When Stella sets up house rules that Ikki cannot agree to, Kurono has them stage a mock battle, with the loser having to obey the winner unconditionally. Ikki agrees to it despite the disadvantages of his low rank, stating that he has to work hard to win the Seven Star Sword Art Festival. During the mock battle, he demonstrates surprisingly strong fighting skills and memorizes Stella's technique, which he uses against her. As a last resort, Stella activates her Noble Art, but Ikki outmaneuvers it and strikes her, winning the battle but collapsing from exhaustion. Later, Kurono visits Stella and explains that despite Ikki's strength, he flunked the academy's evaluations due to his peculiar style. She then recommends her to follow Ikki's style so she could improve. Returning to the apartment, Stella apologizes to Ikki for her behavior. He then reminds her of the deal they made, for the loser to obey the winner from now on, and then orders her to be his roommate.

Ikki's sister, Shizuku, enrolls in the school and causes quite the commotion upon seeing him. With Shizuku's arrival, Stella learns more about Ikki's history.

Shizuku invites Ikki to go shopping, but is annoyed when Stella joins them. Ikki meets Shizuku's roommate, whose device helps the group as they encounter some serious trouble!

During the selection match, Stella, Shizuku, and Alice easily defeat their opponents. Meanwhile, Ikki begins studying Kirihara's Noble Art, which renders him invisible and makes it difficult to even detect him using the other senses. Ikki meets up with Alice and confides in him about him about his match against Kirihara: during the previous school year, when the Kurogane family still had influence over the Academy's superiors, Kirihara had been harassing him with his Device and Ikki refused to fight back, believing it would be used as an excuse to expel him. In the next day's match, Kirihara starts off by activating his Noble Art, which covers the battlefield in an illusory forest. At first, Ikki is able to deduce Kirihara's location by observing the visible arrows he fires, but Kirihara employs a new, improved technique he developed which also allows his arrows to become invisible. He uses this technique to severely wound Ikki and then reveals to the audience that Ikki is required to win the Festival in order to graduate, publicly humiliating him. When everyone joins Kirihara in mocking him, Stella stands up for Ikki and encourages him to continue fighting. Using everything he learned about Kirihara's attacks, a rejuvenated Ikki pinpoints his location with his Noble Art and defeats him, then collapses from exhaustion. At the hospital, Ikki is met by Stella and confesses his feelings for her. Initially embarrassed by the confession, she then kisses his cheek. The two then promise to meet and fight each other in the final match of the Festival.

Two weeks after his battle with Kirihara, Ikki has progressed through the following matches with ease, quickly losing his school nickname of "The Worst One" and gaining the new nickname of "Another One" and becaming popular with the other students, volunteering to mentor them in perfecting their strength using what he learned about swordsmanship. However, Stella becomes frustrated when Ikki isn't paying enough attention to her during the time since they became a couple. Ikki later takes her, Shizuku, Alice and his followers to the local swimming pool for more training. There, Shizuku and Alice discuss about the former's affections towards Ikki despite their biological relation. Meanwhile, after talking about her and Ikki's relationship to classmate Kagami Kusakabe, Stella and Ikki get into a fight after she reveals her misinterpretation that Ikki no longer likes her, which he quickly denies. After the two cool down and settle their problem, Ikki suggests they both blurt out what they want to do right now with each other, and Stella agrees. When the two both want to kiss, they happily do so.

Another student wishes to be Ikki's pupil, but doesn't quite know how to ask. Despite her initial awkwardness, Ayatsuji proves to be a hard worker and talented with a sword.

Ikki's impending opponent might be the most difficult one yet. He'll have to rely on his skill and determination to help a friend rediscover their honor.

In an effort to help Ayase and her father, Ikki challenges Kuraudo Kurashiki, a swordsman from Donro Academy with the nickname "Sword Eater".

The director sends Ikki and Stella to a training camp. Stella was initially excited, believing she was going to spend alone time with Ikki, but it turns out they were sent to help the student council with cleaning up the training field. After cleaning, Stella insists in climbing up the mountains to view the waterfall with Ikki, despite having a fever. Caught in a sudden storm, they take refuge in an abandoned lodge and Stella's soaked clothing leads to an embarrassing situation. Later, they're attacked by a puppet-user Blazer who controls Golems, but the attack is foiled by the student council members while Student Council President Toka Todo herself deals with the Blazer. Meanwhile, Shizuku returns to the Kurogane mansion to face her father and learns that her next opponent will be Toka Todo.

Shizuku's next opponent is none other than the student council president, Toka Todo. In the clash between lightning and water, which blazer will emerge as the victor?

An innocent kiss shared in secret becomes the catalyst for a scandal, and Ikki is taken by the ethics committee on counts of "indecent" behavior with the Crimson Princess.

Ikki's final match, against Toka Todo, is to be televised to the whole world. Stella and Alice win their final matches and spots at the Seven Stars Battle Festival. Even though exhausted and wounded from his prior matches and ill-treatment in prison and haunted by self-doubt, Ikki arrives at the arena in time, cheered on by everyone at Hagun Academy. Toka Todo, as well as everyone else, knows that the fight is fixed but still wants to test Ikki's resolve to fight for the weak. As the match begins, Ikki uses a new technique called Ittou Rasetsu, which grants Ikki even greater power for a single strike. He defeats Toka Todo and proposes to Stella in front of the entire world. The Emperor of Vermillion telephones Ikki's father and suggests that their children should not be burdened by their parents' political goals. A ceremony is held honoring the school's six representatives for the Seven Star Sword Arts Festival and Ikki is named the leader/flag-bearer by Toka Todo. Ikki is later seen talking with Stella about his proposal, but before anything can happen, Shizuku and Alice arrive. Shizuku proceeds to create new rules to teach Stella how to become a bride; this angers Stella who retaliates with her own rules.