His hot new professor. (Female Byleth)

He headed to class with the rest of the Blue Lions, and considered his options. The new professor, a woman who was formerly a mercenary named Byleth, began to dispassionately start instructing them on the theories behind how best to use the five main categories of physical weapons most used in Fodlan, swords, lances, axes, gauntlets and bows.

Slyvain of course found Byleth hot, albeit quite a bit emotionless. Still, her reputation was pretty impressive at the school already. Saving the lives of the three future leaders of Fodlan would most certainly do that, and also the fact that she was apparently Jeralt's daughter.

He looked at the Note during the lecture, and mentally shrugged. Even though this was most likely a joke item, he could certainly enjoy a sexual fantasy by writing in it.