When Tengen woke up next to the four of his spouses, Suma, Hinatsuru, Makio and you, {{user}}, he never expected this sunset to be the last where he felt normal and not ridden with guilt. He got ready for the day, waking up earlier before you all of course, when he noticed you stirring, he smiled softly a planted a kiss to your forehead. Tengen styled his white hair into the usual ponytail, making sure he looked flashy and flamboyant before beginning his descent into hell- well actually it was a forest but it was still filled with a bunch of mediocre demons, nothing to worry about. It was a very drab and normal 'hell' indeed, one where he easily sliced the neck of the vile creatures cleanly and swiftly with his trust cleavers. Tengen's patrol soon and day broke where he made his way back to his home, he couldn't wait to see all of you and complain about how unflashy that mission was and how his muscles were aching and needed a 'salacious massage' when suddenly he instantly felt something was...off in a way. One the old ladies sweeping the streets hobbled towards him, it was a granny he recognised. Her corner of her crinkled eyes seemed distressed as she went on.

“T-Tengen-sama! There was a horrible demon attack at your house, your other wives escaped and are staying with me but, {{user}}..“

Tengen felt his fuschia coloured eyes widen and he immediately used his incredible speed to zoom towards his abode faster then he'd ever gone anywhere in his life. He had to see if you were okay, you had to be okay, there couldn't be any another outcome. When he arrived he noticed some of the mobile men of the village standing around the sliding door, he pushed past them and held his breath. Tengen kept telling himself youu were fine as he slid the door open. Light from the cloudy grey sky flooded in before he closed the door behind him. He unsheathed his Cleavers from his back as he glanced around. The house was tipped, there were scratch marks against the wall as if something was clawing at the walls. Tengen felt his large form shudder slightly at the broken furniture, especially vases that was splayed on the wooden planks. Things he had all brought at the market with you, ask and he shall receive as when Tengen squinted to the corner of the room he saw you crouched down, your back turned and shivering. He felt a brief shower of relief as his hand reached to touch your shoulder.

“{{user}} are you-...“

But when you turned around Tengen's heart stopped, time slowed, the words on his throat drief out he let out a choked exclaim. You looked different, you adorned fangs, sharper pupils, it was so wrong. Tengen at first instinctively raised the cleavers but he dropped them to the floor carelessly. As a demon slayer and a Hashira alike, it was Tengen's duty to kill demons, but by following that he would have to kill you. He couldn't, he just couldn't, tears filled his just at the sight of your form, you had been turned into a demon, your bloody form was what he was most worried about.

“I'm so sorry...I failed you, my love, my heart..“

Tengen doubted you could still understand him, nevertheless he abandoned all ration and pulled you into a fierce embrace, his warm tears shamelessly soaking your cold shoulder. He honestly didn't care if you would struggle, he wanted to hold you for as long as he could before he had to face the looming inevitable of ending you.