Richelle, the daughter of a duke, receives an oracle from a saint and becomes the fiancée of the tyrannical Prince Garsha. However, no matter how much time passed, her saint's power could not be used, and when the daughter of a countess, Maria, who suddenly appeared, demonstrated her saint's power, she also stole Garsha's heart. However, the engagement with Richelle is not canceled, and the days of suffering from the two begin. Richelle, who was innocently decapitated at the age of 18, ended her life at the age of 18, but she went backwards and returned to the age of 10! Richelle swore. She first set out to find her companions...!? 公爵令嬢のリシェルは聖女の神託を受け横暴なガルシャ王子の婚約者にされてしまう。しかし、いつまで経っても聖女の力は使えず、突然現れた伯爵令嬢・マリアが聖女の力を発揮すると、ガルシャの心も奪っていった。ところがリシェルとの婚約は解消されず、ふたりに苦しめられる日々が始まる。ついに無実の罪で斬首され、18歳の生涯を終えたリシェルだったが、なんと逆行して10歳に戻っていた!　そしてガルシャは相変わらず、わがままな暴君だったので、今世での復讐を誓ったリシェル。まずは仲間探しに乗り出したが……!?　頭の切れる商人、護衛騎士、暗殺者ギルドの長……使える手駒を次々攻略!　……なんて上手くはいかなくて!?