Yumina Ernea Belfast/History

Kingdom of Belfast Arc
Yumina is first introduced in the series when her uncle (the Duke of Belfast) arrived to the castle to visit his brother (the King of Belfast and her father) who had been poisoned by an unknown assassin. She is at her father's bedside when Touya Mochizuki was brought to the castle by the Duke of Belfast to heal the King with the same spell he used to cure his wife's blindness. She is present when Touya successfully cures the King of his poisoning and is shown to be very grateful for his assistance as well as showing an interest in Touya which only increases when he discovers the perpetrator of the crime.

Later while the King is thanking Touya for saving his life, Yumina asks permission to speak (after staring at Touya intently for an unspecified length of time). She asks the King for permission to take Touya as her husband much to the shock of everyone present especially Touya (who comically spits up the tea he was drinking). Though he initially protests against taking her as a wife Yumina and her father are able to make a arrangement with him saying that if Touya could not find a reason to marry within two years then they would call off the engagement without any hard feelings.

After taking care of things at the capital Yumina would travel with Touya to the town of Reflet, where she would introduce herself to his companions which proved awkward for everyone given her position as a princess. After introductions they travelled to the local Adventurer Guild to register Yumina and also to take on another request, this time to take out a group of Great Apes that have terrorizing the nearby forest.