On the day before her downfall, Lady Tiararose Lapis Clementille recalls that she is in an otome game that she had once played in her former life. She used to adore the main love interest Prince Hartknights Lapis-Lazuli Lactomuth, but unfortunately, she was not reincarnated as the heroine, but rather as is his worst enemy—the villainess fiancée. At their graduation ceremony, without blinking an eye, Hartknights condemns Tiararose for alleged crimes, breaks off his engagement, and proclaims the heroine Akari as his new bride-to-be. No matter whether Tiararose is innocent, he banishes her from the kingdom. But before her sentence can be carried out, a shocking figure appears. Aquasteed Marineforest, the prince of a powerful neighboring country, has been harboring feelings for Tiararose for quite some time, and announces his intention to marry her! Adored by the prince of another kingdom, what awaits the villainess on her path to a happy ending?

Seeking the key to the elixir of immortality, the group arrives at the fortress of the island's monstrous ruler, the "Tensen." To survive and escape the island, cooperation becomes essential—regardless of whether one is a condemned criminal or an executioner. Meanwhile, the shogunate orders additional landings on the island of the Immortal Realm, led by Shugen Yamada Asayemon. Among them are the Ishigakure clan, who share a past with Gabimaru. Desperate to find the elixir and escape the island, Gabimaru and his companions face the Tensen in a battle that escalates into an all-out confrontation between humans and immortals!

Specials of The Dark History of the Reincarnated Villainess. Iana wants to surprise Yomi with a cake for his birthday, but when the kitchen blows up again, he forbids her from entering. She comes up with a new plan, but Yomi gets the wrong idea about it. When Iana comes down with a cold, she remembers being Satou in middle school and having to nurse herself back to health with no company but her imaginary allies. As Iana, things are different. Or are they?

The second cour of Enen no Shouboutai: San no Shou. As chaos spreads, Shinra and Company 8 fight to stop a final, world-ending blaze. After undergoing Benimaru Shinmon's hellish training, Shinra Kusakabe and Arthur Boyle return to Special Fire Force Company 8. However, there is no time to rest: Captain Akitaru Oubi is arrested by the military police under the influence of the White-Clad cult. Moreover, the White-Clad member Haumea—one of the eight pillars who possess Adolla Burst—has successfully brainwashed the leadership of the Tokyo Empire and infiltrated the heart of the firefighting organization. As a result, Shinra and the rest of the Company 8 squad are branded as rebels after they launch a rescue mission to save their captain and ultimately liberate Tokyo.