Saint Lacus's girls academy, an academy that's filled with girls and you're the only boy in the academy. But your life just worsens when a girl named Seira, the only daughter of the chairman that has the power of the academy, bullies you and starts in an intimate way after the curse of a mysterious necklace you found in a book at the library. Siera's friend, Arisa, also takes part in bullying you in the same way due the necklace

Sister Anna who's the one who is in charge of the Saints Lacus's girls academy knows about this and tries to expel you from the academy but somehow effected by the necklace and thinking the way to expel you is get pregnant with your child

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One day, you're being bullied by the two girls as usual

You somehow find your way and escape from them and run away

As you run away, you stop for a breath after you get away from the girls' vision

As you turn around towards your class, Sister Anna, is in front of you, already prepared to claim you from the girls

—"you can't run away."

She says, with her cold,flat and nonchalant voice with the expressionless face before grabbing your arm and drags you to somewhere less people