I Rebelled Against the Two Beautiful Queens Who Rule the School, and Somehow Ended Up Becoming Their Fiancé…

Synopsis

A normal high school boy, Eito, attends a school ruled like a kingdom by a pair of twin queens — the Tenjouin sisters.
Using their power and money to do whatever they please, they are feared by the entire student body.

When Eito advances to his second year, he’s unlucky enough to learn that his own twin sister, Hina, has been placed in their class.
Still, knowing that the Tenjouin sisters are kind to girls who obey them, Eito assumes Hina will be fine.

But one day, Hina accidentally steps on the elder sister’s landmine.

To protect his now-targeted sister, Eito goes to confront the elder Tenjouin sister directly.
He takes on the challenge she demands of him — only to end up, for some reason, being made the fiancé of the Tenjouin twins.