Cross-Dressing Villainess Cecilia Sylvie, Vol. 1 (light novel)

Reincarnated as a villainess in an otome game, Cecilia realizes that as theheroine’s
rival, she’ll die no matter what route she takes.Convinced that she can avoid her death
flag by masquerading as a man, shecrossdresses and assumes a new identity. In the
process, however, she ends upreplacing her brother-in-law as the knight charged with
protecting theheroine! And now the prince who should be condemning her to death
wants tohang around her all the time...?! Cecilia will do whatever it takes to achievea
peaceful and carefree life, but if her guise ever slips it’s GameOver!