At the first meeting with his fiancée, a duke's daughter of the same age, the young lady screamed and collapsed upon seeing him! Why...? It turns out she's the villainess in an otome game, and his infidelity will lead to her downfall. But he was only ten years old at the time! He'll do everything he can to change the story. This is a love story between a prince and a villainess, starting from the age of ten, as they fight against a cruel fate and the game's constraints. Includes many additional episodes from the web version, offering multiple endings.