[Rama] A SENSE OF SIBLING CLOSENESS - Too terrible her libido (20 pages)
themes: yandere, stepsister, impregnation, virginity (hers, but I'm confident they're both virgins at the start even if the comic doesn't say), aggressive female, temptation, sex in public restroom, tables turn

This is the technically-not-incest version of what I previously labeled THE RIGHT CLOSENESS FOR SIBLINGS, and the first chapter in Himitsu no Decoration.

If you like this, please seed it where you found it. DO NOT POST IT OTHER PLACES.