High tide

Harry Potter - J. K. Rowling
F/F
G
High tide

The dark curly-colored girl huddled in a corner, her pale complexion haloed with a brilliant flush, the air entwined with an enticing cinnamon aroma, signaling that the girl was differentiating into an Omega.
bellatrix never thought she would differentiate today, in fact she was the latest of her peers to do so, she had always thought she would become a powerful Alpha, but of course that thought disappeared when everyone else managed to have a second gender and she was still late in differentiating, bellatrix was sad about this for months.
Just when bellatrix had gathered her mind and accepted herself as a Beta, Merlin played a joke on her, she was going to differentiate and become an Omega!
She dragged her limp body and cursed silently, her crimson lips colliding up and down with a seductive gasp. bellatrix tugged at her pure white dress shirt with difficulty, and a whimper came from the cavity of her throat.
bellatrix felt unfortunate that she now presumably had to hide in her dorm room through this damned period of differentiation, and silently prayed that her beautiful roommate Hermione Granger would not return at this time, especially seeing her in this sorry state, a Blake who would never show her weakness to anyone.
However, God forbid Blake, at the moment of hearing the gentle voice, bellatrix simply want to immediately find a crack in the ground, but somehow her heart was born a strange gladness.
It must be the effect of this damn diversion period, bellatrix thought.
"bellatrix."
Granger, who had come back for bellatrix, saw the scene, and the words that were about to be spoken stopped at the tip of his tongue for a few beats before they were suppressed by her master, the dark amber color deepening, the sweet pheromones of Omega in the room enticing the Alpha's nerves, Granger crouched down, her long fingers picking up the girl's slender chin, the strong pheromones of Alpha in the air, with some coercion Sexual flavor, bellatrix follow the instinct to jump into her arms
"Help me .... hermione"
"Of course, you know, I never say no to you."