Strongest Seitokai ~Rebellion of the Men~

This is a school-themed action RPG where a student leader
named Ranko Ayase gets sexually harassed. Can her weaker big sister save her?
Or will Ranko succumb to harassment...?

Story
Ranko Ayase was the leader of the student council.
She hated boys and exploited her authority to terrify them. Until they'd had enough.
One afternoon, as Ranko and her big sister Yui were about to go home,
an unexpected visitor...

Game
Play as Yui, the weaker big sister, and try to rescue Ranko from a male insurrection.

Enemy attacks will fill up her "op-f" gauge (special skill).
When it reaches max you can unleash a devastating move on enemies.

Enemy attacks will also increase her sexual sensitivity.
If it gets too high she'll lose her mind.
Calm her down again by drinking herbal tea.

Characters
Yui Ayase - Protagonist, a shy, not very sociable girl student with incredible big breasts.
Ranko Ayase - Yui's little sister, student leader, outgoing and talented. Also incredible breasts.
Erina - A member of the student council, highly trusted, Yui's right hand man.
Captain of the insurrectionists - A mysterious man. Leads with charisma.