Douma angst, Many Part And Requests Are Allowed(Swap au, Uppermoon as hashiras)

A request from -Lotus3345-

(Swap au)
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[THIRD PERSON POV]

It was a normal day at the hashira's common area. Kokushibou and Nakime were hanging out and talking about their previous missions, and sharing opinions on their unique eyes.

Today, Douma had a mission, he was slightly uncertain because the area he was sent to fight the demon, who rather had a low rank, was roaming around the dangerous territories of other powerful demons. But he still kept the smile, and gave a curt nod of obedience towards the order from Muzan-sama. He asked if he could take someone else, in which Muzan seemed neutral about it and gave him permission. Douma got up, and walked towards Hakuji, who seemed to be minding his business after he had trained Nezuko and her dear friend Inosuke, who was huffing about loosing in a spar with Hakuji or something.

Douma cheerfully spoke, with his usual gentle voice, "Hakuji-san!! Would you go on an assigned mission with me-"

He was cut off, with a slight irritated huff of Hakuji, as he practically grumbled to him, "No, just go by yourself. I am busy." He spoke, rather rudely.

Douma was taken aback, but what's new? That's just how he acted, he just gave a teasing look before saying, "How many bamboo did you get stuck in your behind? Is it enough to recreate the whole bamboo barriers-"

"SHUT IT-" Hakuji shouted, a bit embarrassed by him saying that, where Douma giggled at his reaction. Hakuji got annoyed and said "Just leave already and leave me alone!!"

Douma laughed, but went away anyway not wanting the stout person's rage getting turned towards them.

As Douma ran through the dense forest, the darkness hovering around him. He was high on alert, keeping his hand on the katana. Then his kaleidoscopic eyes caught on a flash of a person, he stopped abruptly, looking at the silhouette. It looked like the demon he was supposed to end! He dashed towards them, but got caught off guard with them dodging it too fast, as he stumbled then looking back. His eyes widened, looking at the figure properly, it wasn't the demon he had came to decapitate, it seemed it was just a disguise. It was none other than uppermoon 4, Muichiro and Yuichuro. Their ability to shape-shift was renowned to the hashiras and other fellow demon slayers.

Douma stopped in his tracks, a bead of cold sweat running down his temple. Muichirou chuckled, with a sinister undertone, despite the child-like voice, which was often used to deceive people and lure people thinking he was a little child.

Douma's eyes shot up at him, and gulped the lump. Muichirou lunged at him, he dodged, quick to react, swung his katana at uppermoon 4. But the demon didn't look fazed as he effortlessly regenerated. Douma knew he was up a strong opponent, if not, one of the strongest opponents facing in awhile.

Swords clashing against demon's claws were heard, the hashira moving at immense speed, gradually loosing a but of energy. But the demon only looked a bit hurt, yet keeping up. In a swift motion, the Hashira's sword broke.

Douma stood, huffing and looking at his broken katana in shock and slight terror. No way he could fight with bare fists.

Then Muichirou spoke, a bit warped because of his beloved brother's voice too, "You, have potential, it'll be a shame if I kill you here right now..." He paused to give a dramatic effect and the tension to rise, before he continued with a sadistic and sinister tone, "I'll give you a deal, you turn into a demon and you'll live, or! You defy me and I hurt your precious little students.. you know who I am talking about~"