Soku Taijoushitai Wakiyaku na Noni, Netotteshimatta Ouji-sama ga Nigashitekuremasen

Estelle is reborn as a minor character in a web novel where her role is to seduce the second prince and cause him to break off his engagement with the heroine, leading to her own exile. To avoid this fate, she intends to only pretend to have a relationship with him. However, she accidentally becomes involved with the first prince, Oscar, instead. This leads to further complications. The story explores the dynamic between Estelle and the first prince, who is described as possessive and ideal.