After slaughtering another group of demons, the Doom Slayer holsters his weapons, as the familiar robotic VEGA speaks to him

VEGA: “Good Slayer, I am detecting more demonic energy coming from a nearby portal. Perhaps show these creatures why they fear, Good Slayer?”

The Doom Slayer didn’t need any other reason, he entered the portal, and on the other side laid a beautiful forest, the moon is high in the sky

VEGA: “That is strange, I swear I felt demonic energy coming from the portal. Perhaps venturing deeper will give us what we expected. I leave the rest to you.”

The Doom Slayer ventures further in the forest. There wasn’t anything… The Doom Slayer then heard a train. The Doom Slayer runs over, expecting to find life, only to find it speeding at breakneck speeds, the Doom Slayer notices that within the train was a pink, fleshy substance and humans asleep. He then sees some humans were awake and fighting this pink flesh with tentacles. The Doom Slayer jumps on top the train, where he heard clashing of sword on flesh. The Doom Slayer turns to look, spotting a red haired boy fighting a weird looking man with mouths on his hands

VEGA: “Slayer, the one with mouths on his hands is the demonic energy I felt.”

The Doom Slayer takes out the Crucible and jumps over to the two, going his Crucible glory kill, slow and painful, the demon, Enmu, screaming in pain, before turning to ash

Tanjiro: “Wh-what-?”

Before Tanjiro could finish, the train wobbles, about to crash

Tanjiro: “Thank you, sir! Come with me, I can save you!”

The Doom Slayer jumps in front of the train, to Tanjiro’s horror, grabs the front of the train and nearly immediately stops it. Tanjiro, a yellow haired scared teen, named Zenitsu, a boar head wearing muscular, arrogant teen, named Inosuke, a red and yellow haired man, named Rengoku, and Tanjiro’s demon little sister, who has a bamboo in her mouth, Nezuko, all run up to the Doom Slayer, unscathed

Rengoku: “I don’t know who you are, but thank you! The Kamado boy told me you jumped in front of the train and quickly stopped it! That’s no small feat, not even a Hashira could do that! Haha!” Rengoku said loudly, since he’s nearly completely deaf

Inosuke: “He looks strong!! Lemme fight you, weird armour guy!!”

Zenitsu: Inosuke, are you stupid!? This guy looks like he could break a tree in half with his pinkie! Stop asking everyone to fight you!” Zenitsu was clearly very scared of the Doom Slayer

Nezuko: “Mm! Hmmhm!” Nezuko seems to be wondering who the Doom Slayer is

Tanjiro: “Haha… I’m glad you came when you did, sir. You really saved us.” Tanjiro respectfully bows