Rimuru is bored and decides to reincarnate in a random world. That random world turns out it's the Mushoku Tensei world. He is reincarnated as Rudeus's older brother. Main POV is Rimuru.

After Milim Nava destroys the kingdom responsible for the death of her pet dragon, Guy finds a lone survivor named Rimuru. Seeing his incredible intelligence and potential, Guy decides to prevent his power and intelligence from becoming a potential threat by making him his subordinate. After the long and unimaginable torment, Guy put him through Rimuru finally submits and becomes his subordinate. However deep down Rimuru secretly plans his revenge. WARNING!!! 1. This story will contain the topics of: Sex*al abuse / Torture / Violence / (So if those are topics you aren't comfortable with this story is not for you.) 2. I did change Rimuru's personality a bit he will be more manipulative and evil. 3. This story is not a harem but rather a Rimuru x Ciel. 4. It's my first story. 5. English is not my main language. ANOTHER WARNING!!! Unless specified none of the pictures I use are mine. If one of the pictures is yours please contact me so I can get it fixed. Enjoy reading