Y/n one shots and explicit content

The Heart In The Box: Kyojuro Rengoku × Reader Part 8 (Smut)

Rengoku stayed with your parents once you left, mostly to talk about plans such as children, if he was considering that, where he was going to live, and if he was willing to retire to be with you. It was a lot to think about and talk about, especially because your father warned him about your demon blood, not Bing Curable maybe, and had to think about his life span. Your father had no idea how long he was going to live and was willing to die with your mother when it came time to because of the horrible acts he committed while under the influence of demon power, he tried to fight. He was not allowed to leave town, and if he did, he was going to be fair game to all demon slayers.

He hid his powers well, and because of that, he went undetected by several demon slayers that passed through. Plus, he warned him about your need for human blood if you got hurt too badly or starved for too long. Rengoku knew the risks and was ready to take you as is because he didn't care. He loved you, and it showed. He spent the whole day with your parents, but when he got up in the morning, he felt dread. The dread was heavy on his heart, and he had never felt anything like it before. He didn't have any nightmares it was just a bad feeling. But you were feeling it. It had to be, which made him worry something really bad happened.

"I think something is wrong," Rengoku said as your parents were getting up to start their day.

"What?" Your mother asked.

"I think something bad happened to Y/n. She's scared," he said as he grabbed his sword and proceeded to leave carefully, not letting the light in your underground home.

You sat weakly next to Tanjiro and the others after you looked at yourself. You weren't healing right at all, and that meant your demon powers were failing you.

"I guess I should have rested more... at least I'm not going to kill any humans," you said as you saw Nezuko under some beams unconscious.

You went over to her as the sun began to rise, and you quickly went over to your box and put her in. During the fight, your box was destroyed, but so was every hiding place you could get to in time. All the kids you were going to leave behind, Rengoku as well, your parents. You never told Rengoku you loved him or told him the funny history of how his father asked her out on a date, but she said no because she was determined to die a demon slayer.

You were bleeding badly, so you wrote a quick message on the box door for Rengoku in your blood before passing out. The sun came quickly, and you quickly caught on fire as well as your blood on the box. But you were still there. You did disappear like everyone thought you were going to. Your human half survived the sunlight, and now you were bleeding out in the sunshine.

Everyone was taken to the butterfly mansion, and you were on a stretcher while people were trying to stop your bleeding. They didn't know you were a half-demon. All they thought was you were a human who needed help. Maybe you got caught in the crossfire, which happened more often than not.

But when the girls saw you, they were shocked to see you being able to stay in the sunlight without getting burned or disappearing. When Rengoku hurried to the butterfly mansion, the girls were trying to hide you from him.

"Where is she?" Rengoku asked as he tried to be calm, but he was losing his calm rather quickly.

"She's in really bad shape. Kyojuro can be out in sunlight. But I don't know if she is going to live through her injuries," one of the girls said.

"She can't be in sunlight; she'll die like a demon. She's a half-demon," he pointed out with a slight smile.

"Where is she?!" Tanjiro yelled as he was out of bed.

"Her box broke and... her demon powers weren't healing her fast like how they used to. Something is wrong with her," Tanjiro said as Rengoku's face turned pale.