Our Last Crusade or the Rise of a New World

Two nations, the Empire and the Nebulis Sovereignty, have been at war for 100 years. Imprisoned for freeing a witch, Iska is given a chance at freedom. In exchange, he must take down a powerful astral mage known as the "Ice Calamity Witch."

Iska is given a new mission to apprehend the Ice Calamity Witch. By accomplishing the mission, Iska will be a step closer to realizing his dream for a peace treaty. When Iska and Alice meet again, they werent prepared for what was coming for them.

The members of Unit N07 successfully locate the vortex, but the Sovereignty had already found it. After Mismis is captured, Iska must fight against Kissing, a purebred, to get her back before the Empire attacks the Sovereignty base.

Alice is forced to kidnap Iska. Afraid of what will happen to him if word gets out, Alice orders Rin to take them to the Prison Sector to decide their next move. Meanwhile, the members of Unit N07 infiltrate the Sovereignty to get Iska back.

Iska arrives just in time and battles Salinger, who not only wields multiple astral spirits, but can also combine two contradicting elements together to make his astral art even stronger. Can Iska measure up to him and defeat him?

After their fateful encounter, Sisbell visits Iska at the hotel and asks for his help, ironically offering a similar deal as her sister Alice once did. However, before they can discuss the matter in great lengths, Sisbell is targeted by one of her own.

Joining forces with Alice, Iska and his team quash the Empire and the Sovereigntys conspiracy and successfully protect Sisbell. After the ordeal, they travel to Alsamira to enjoy their vacation. However, Sisbell has not returned to the palace yet, and asks Unit N07 on vacation to escort her back, offering something they can’t refuse. Meanwhile, Alice gets a gut feeling that Sisbells new bodyguard might be Iska...

The suspect who attempted the assassination may target Sisbell next, since she hosts an astral spirit with the ability to reenact the past and identify the suspect. Unit N07 goes on high alert and is left with no other option but to hide at a hotel and wait for an audience with Mirabella. However, a large explosion occurs near the hotel. When Sisbell tries to reenact what really happened, someone with the same "shadow" from the reenactment starts to attack her.

Invited by Elletear, Iska and his team visit the Erz palace, a vacation house owned by the House of Lou. Wary of her sister, Sisbell brings Iska along to sweep the palace for bugs. Iska is very nervous when she decides to sweep Alice’s bedroom as well. Meanwhile, Alice hurries her way to the Erz palace to stop Sisbell from discovering her forbidden secret. When the three princesses come together, Iska may find himself between a rock and a hard place...!

Iska must fight Talisman, who can manipulate invisible waves. Dubbed as “the Vicious Tyrant,” Talisman’s powerful attack is difficult to overcome, even with Iska’s mobility. Jhin and the others take Sisbell with them but are also finding it difficult to shake the Midnight Sun Witch, Grugell, who’s on their tail. Meanwhile, a fierce battle between the Saint Disciples and purebreds is about to start.

Alice’s hatred towards the Empire grows stronger after their recent attack, when Iska, in pursuit of Vichyssoise, appears in front of her. They can no longer maintain their easy relationship as a friendly rival. With ruthless determination, Alice declares war on Iska, regarding him as an Imperial swordsman, hostile towards the Sovereignty. Meanwhile, a man watches their battle and sighs... Salinger the sorcerer had also followed a similar fate as the two.

Iska begins with the plan to infiltrate Hydras base to rescue Sisbell.