The If Phone Booth: Sun-Breathing Tanjiro Saves His Big Brother

The If Phone Booth lets people from the Myriad Worlds make up for the regrets of their past.

Regret One: Tanjiro, having mastered Sun Breathing, returns to a few months earlier and joins the battle aboard the Mugen Train.

Now stronger than ever, he arrives on the Mugen Train.

With Tanjiro, Inosuke, and Zenitsu joining the fight, the whole battle aboard the Mugen Train is turned on its head!

The sleep demon dies unwillingly, while Akaza marvels at their strength! Big Brother Rengoku is saved, changing the ending!

Regret Two: In Guilty Crown, Shu Ouma, now possessing the "King's" power, returns to the day the school is locked down. He protects Gai Tsutsugami and Inori, and first takes out the traitor Namba.

Regret Three: In Akame ga Kill!, Tatsumi, clad in his golden Incursio, returns to two years earlier. He saves Sheele, Mine, and Big Brother from *'s clutches, then overthrows the Empire and slays Minister Honest in a fit of rage.

Regret... Dragon King Lu Mingfei: "My senior brother blew up a car axle for me, so I'll save Xiaolongnu for him!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.