hear me out writer-nim 🙂‍↕️☝️!
we can solve the problem of why nobody knew about the sister the readers nor the characters in the story outside jen’s family, when she was born she was so sick and she neerly died the only solution was to take her to the lands yt is from “idk what it calls” and that's how he met jen there was a cure for her there and they did help her, her father feared for her a lot so they hid her away because he didn't want his daughter to be sold in a political trade like an object or something her mother is harsh so she never actually pay attention to that and she was against the idea but her brothers kept visiting and they're close the crown prince got busier with everything but jen always found time for her and she loves him so much he's her brother, savior and the only person she can trust and her best friend, and she feels that she owes him her life because of what he had been through after they met yt what do you think 🤒🤒🤒???? most importantly jen would go crazy when she revealed her existence because he was afraid for her too not even their family knows she was still alive just the mom and dad and the siblings knew 🙂‍↕️