What If Phone Booth: Sun-Breathing Tanjiro Saves the Flame Hashira

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

Regret One: Tanjiro, who has mastered Sun Breathing, returns to a few months earlier and joins the battle on the Mugen Train!

He has long since become a different person, and now he arrives on the scene!

With Tanjiro, Inosuke, and the kind-hearted Zenitsu joining the fight, the situation aboard the Mugen Train suddenly changes.

The Sleep Demon is slain by Tanjiro's blade, still full of resentment, while Akaza marvels at the group's strength! Big Brother Rengoku is saved, and the ending is rewritten!

Regret Two: Guilty Crown. On the day Shu Ouma, who possesses the power of the King, returns to the school under lockdown, he protects Inori and defends Hare, then kills the traitor Nanba first.

Regret Three: Akame ga Kill! Tatsumi, clad in the Golden Ogre armor, returns to two years earlier, saves Chelsea and Mine from *'s clutches, overthrows the Empire, and beheads Minister Honest in a rage.

Regret... Dragon King Lu Mingfei: "Senior Brother smashed a car axle for me. I have to save Little Dragon Girl for him!"

This novel and its characters are entirely fictional. Any similarities are purely coincidental. Do not imitate.