In which a a modern man inhabiting the body of a noble attempts to adjust to his new lifestyle with a clingy demon by his side. "Hey, Cale. I'm cold. Can I sleep beside you?" "...Do as you please." Unbeknownst to him, he starts to get attached. 𝐂𝐀𝐋𝐄 𝐇𝐄𝐍𝐈𝐓𝐔𝐒𝐄 𝐗 𝐆𝐄𝐍𝐃𝐄𝐑 𝐍𝐄𝐔𝐓𝐑𝐀𝐋 𝐑𝐄𝐀𝐃𝐄𝐑 𝐃𝐎𝐌𝐈𝐍𝐀𝐍𝐓 𝐑𝐄𝐀𝐃𝐄𝐑 𝐆𝐄𝐍𝐃𝐄𝐑 𝐍𝐄𝐔𝐓𝐑𝐀𝐋 𝐏𝐑𝐎𝐍𝐎𝐔𝐍𝐒 (read tags if you can't read the above)

Kim rok soo somehow ended up inside a body of a child. Not just any child, but Kim Henituse, the twin brother of Cale Henituse. Kim rok soo once read a story. A story where he sympathized with the Cale. After reading his backstory. After all, Kim Rok Soo's childhood wasn't that great. How couldn't Cale turn out the way he was when he was neglected and didn't have anybody to teach him what is good or bad? Though he learned that Cale always had a bad temper. Kim was patient and understanding. As Cale was his brother now. He would be there for Cale no matter what. He would change the whole future just to make Cale happy. Then becoming a rich slacker living with his brother. Though he thought his plans were set. Who knew these twins would be going through so much. Just like Kim's dream of being a rich slacker was fading away, Cale's dream of having his brother not get hurt was also fading away. Welcome to the journey of the Henituse twins! Published in Ao3 - under SleepyCale