Disclaimer: This is my first story, so it might not be very good
Warning: There will be smut
SPOILER WARNING: this story is based on events from the manga I recommend reading the manga first before reading this
Tanjiro is done selling coal and is on...
Muzan was curious; why did he do that to someone he had just met? He only intended on talking with him, telling him things that would make it difficult for Tanjiro to leave him. Muzan was still confused about what he was feeling to make him go so far. Though, he did suppose that Tanjiro's reactions were quite cute. "I wonder what other expressions he will make?" Muzan smirked to himself, deciding to continue acting along to see what Tanjiro would do.
Muzan had Nakime summon Doma. Nakime strummed her biwa, and Doma appeared. "Master, it's good to see you." Doma smiled. "Doma, I have an assignment for you; I need you to watch over my companion. His name is Kamado Tanjiro." Doma was curious, "oh? What would you like me to do?" "I want you to watch over him and report to me on his condition." "This could be interesting; I wonder what his companion is like?" Doma thought to himself as he headed to Tanjiro's room.
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Tanjiro awoke in a daze, his entire body sore from last night's attack. "I need to get out of here quickly." Tanjiro was determined to escape by any means. "Maybe I can convince that demon to let me out of here; I can't do anything while chained in this room." He looked around for a way to remove his shackles when the door opened, and in the doorway stood a tall man with rainbow eyes and the number two carved into his eyes.
Doma was on his way to the room Tanjiro was being held in, wondering how he would get the human to trust him. Doma opened the doors and saw the boy that had everyone talking. Those eyes felt like they were looking not at him but through him. "Interesting." He thought.Doma felt a strange feeling in his chest, telling him this child must be protected.
"Hello, my name is Doma. It's nice to meet you, Tanjiro." Tanjiro was perplexed. "you know my name?" "Of course, the master told all us upper moons your name." "I was just curious about what kind of human you were for him to spare you." Tanjiro felt a chill crawl down his spine at the demon's words. "Why did he spare me?" "I'm not sure. He doesn't tell us more than necessary." "Then why are you here." Tanjiro gazed at Doma with a critical look. "I thought you would need a friend to help you get used to being around demons." "Don't worry, master explicitly stated no one is to harm you." Tanjiro was suspicious of the demon's true intentions. However, if he wanted to escape, he had to play along. "Good to meet you, Doma."
Doma would visit Tanjiro when he had time which was often. Doma would often ask about Tanjiro's life and his family. While hearing his stories, Doma would remember his parents and how they died from their stupidity. Doma was surprised and a little jealous that there was a family that was happy together.
When Tanjiro asked about Doma's family, he felt reluctant to say anything but, at the same time, couldn't help but tell him after looking at Tanjiro's eyes. After Doma revealed his childhood, Tanjiro looked at him, but there was no pity in his eyes, just sadness.
"Why do you look sad?" Doma asked. "It's because you had to experience such things when you were so young." Then, Tanjiro pulled Doma into a hug and began stroking his head. Doma was very surprised at the affectionate touch. After that, he became more attached to Tanjiro, much to Muzan's displeasure.
