With the approaching date of Eris' tenth birthday party, Rudeus allows her dance teacher to take over part of his tutoring schedule to have her improve, while he makes use of his newfound free time to learn other languages. Despite that, Eris barely improves her dancing and considers giving up, but Rudeus encourages her to continue and starts helping with her lessons. As Rudeus makes some progress on his foreign language skills with Ghilsaine and Roxy's help, Eris does not improve at all and on the day of the party, she fails to dance with another noble...