That World of Otome Games is Tough for Us

Marie Route is a short story that was initially released as bonus material alongside Volume 3 and currently has four parts, with no end in sight. Part 4 released for free as you apply the survey of Volume 6.
 * See also: Marie SS Part 4 for free for release of Volume 6.

Summary
The premise of the story is an alternative route to the main story, as in this route Marie has failed to capture the Otome game's targets and befriended Leon, without the knowledge that he was her big brother in her past life.

With Marie no longer interfering with the story's events, the story is able to progress more naturally following the path it was meant to follow. Even still, it turns out that things don't always go as planned.

Full Summary
*Information will be added soon later.*