Cross-Dressing Villainess Cecilia Sylvie, Vol. 4 (Manga)

I truly believed that I, Cecilia Sylvie, would finally get a break from being Cecil for an entire two weeks! It was supposed to be me and Gil, just the two of us, for the rest of summer vacation...but because of Lean's misguided desire for petty revenge, the whole gang is here! And if my fiancé, Prince Oscar, discovers I'm really Cecil, I'm guaranteed to trip a Bad End flag...