I was reincarnated as the third member of the entourage of the villainess in an otome game world.

I, Sayama Yuuna, have been reincarnated. As the third lackey of the villainess in an otome game world. ……Yes. As the third lackey. A half-hearted villainess position. Honestly, it's the worst position possible. Even though I managed to climb my way up to becoming the third lackey of the villainess who holds power in this academy despite being a commoner……. It seems the rosy future I thought I had was just a facade, and a pitch-black future was approaching from behind. ※This is a three-way battle (?) involving the villainess, the heroine, and the protagonist who is the target of conquest. 【Main story: 3 chapters conclusion + Prologue and Epilogue】