Euphemia invited Xiao Ran to become her Personal Knight, and in the end, Xiao Ran chose to accept. The matter seemed to have been settled just like that, and there was basically no longer much suspense over Xiao Ran becoming Euphemia's knight.
Yet although it appeared that the matter had been simply decided with one invitation and one acceptance, there were still many matters and complications to resolve before the outcome could truly be confirmed. Euphemia had the authority to appoint her own guardian knight, but as the Third Princess of the world's most powerful nation, adding a guardian knight to her side was no small matter for the Butalia Royal Family.
Of course, most of those complications would not ultimately fall upon Euphemia's shoulders. However, for Xiao Ran to truly become Euphemia's guardian knight, he still had to go through a process. There would be all kinds of examinations: checking his physical condition for any problems, investigating his background to ensure he posed no threat to Euphemia or Butalia, and assessing his capabilities in every respect to determine whether he was genuinely qualified to become a guardian knight.
For the Butalia Royal Family, guardian knights often held a special significance to every royal member. Between those of the same sex, the relationship might merely be one of superior and subordinate. But when master and servant were of opposite sexes, special feelings beyond that hierarchy often emerged. Within the Royal Family, this was also an unspoken rule that was tacitly accepted.
For example, if a prince chose a woman as his guardian knight, that woman would almost certainly become one of his consorts in the end. Conversely, once Xiao Ran became Euphemia's knight, the man Euphemia would have the most contact with in the future would undoubtedly be Xiao Ran