Fiancee Chosen by the Ring, Vol. 6 (manga)

The Harvest Festival is in three days and Aurora is running around making dresses. Meanwhile, a group of suspicious people arrive in town, looking for a girl with primordial magic… After hearing the maids say that they are running low on thread, Aurora convinces her reluctant brother Luminox to let her go to the store/shop accompanied by Yule and the others. However, when she gets down from the carriage, what could be waiting for her…?!