Deluxe—the tournament to determine the strongest in Vanguard! While invitations are being sent to top-tier fighters, Akina enjoys the cultural festival, when a mysterious man named Kagetsu Yakumo appears before him. Who could he possibly be…?!

Kagetsu Yakumo was once a legendary fighter on par with Michiru! But what are his true intentions in challenging Akina to a fight…?! —Welcome to the stage of trials. The Trial of the Moon begins now!

The much-anticipated third Deluxe finally begins, featuring a lineup of powerful fighters! The first match is between Mirei, leader of Daybreak, and Gui, the AI from Uniformers! With new powers in their arsenal, who will claim victory…?!

Suzune Rokuoin, known as the "Vanguard Machine" and a representative of an elite family, faces Senka Kanae, nicknamed "The Berserker." The battle features two of the "Three Rising Stars," showcasing a clash of the next generation's brightest talents!

The long-awaited battle for the throne, which never materialized in the past, finally takes place at Deluxe! Akina enthusiastically prepares for a fight with a friend, but Kuon seems uncharacteristically gloomy. What's behind his troubled expression…?!

To live as Erika Myojo in this world, Erika makes a life-changing decision. At the same time, Nao opens up about the worries she's been carrying. As they revisit the past, their true feelings clash in the present!

In America a while ago, Michiru, having finally returned from the digital world, is visited by Taizo. The church bells begin to ring, as if to celebrate his awakening, or perhaps to bless his reunion with a friend.

Cheered on by her team, Megumi, leader of Blackout, delivers a passionate fight! Meanwhile, Suzune coldly declares, "Vanguard doesn't require emotions." But could this encounter bring change…?!

Akina's next opponent is Raika Koshiba! While Akina speaks passionately about his determination to win, Raika's glasses gleam sharply…! Witness the strength of the previous Deluxe champion as he continues to aim for the top!

The undefeated professional fighter, Kagetsu Yakumo, reigned supreme for a year before disappearing. At last, his mysterious past is revealed—a tale of an encounter with someone on a beautiful moonlit night.

Suo, who once carried a void in his heart, sees his past self reflected in his opponent, Suzune. "A fighter who can't win has no value." Bound by the expectations of the Rokuoin family, she has closed her heart. Can Suo break through and befriend her?

As fighters secure spots in the finals, Akina's final opponent is Kagetsu Yakumo! Drawing upon all his experiences, Akina once again faces the Trial of the Moon.

"What is your reason for playing Vanguard?" Kagetsu, too, is searching for this answer. What is the realization Akina finally comes to? And how will the Mythisch respond to Akina's heart?!