Ateuma Chara no Kuse shite, Super Darling Ouji ni Chouai sareteimasu.

A man responsible for the sales of the romantic fantasy novel “The Silver Prince and the Holy Bride” suddenly dies in an accident. One day, he is suddenly reincarnated inside the story of the novel as a minor side character named Loneal Gravis. In the original story, Loneal Gravis is a side character scheduled to be executed for trying to steal the main female character, Lily, who is the fiancé of Prince Alec. Because of this, as a fan of the novel, he initially has no desire to change the plot, but he also wants to avoid being executed. However, in a desperate situation, he accidentally messes things up by throwing a love potion at Prince Alec, causing the entire storyline to change… - Synopsis Ateuma Chara no Kuse shite, Super Darling Ouji ni Chouai sareteimasu. https://hentaicop.com