This game is divided into chapters instead of routes since the choice-based system is focused on the impact of how your MC progresses into the story instead of romancing. Needless to say, romance is present, but isn't the focus.
[YOUR MC] suddenly wakes up in an unknown room with an unfamiliar man who seems to know them. After a hectic assessment of their whereabouts, they conclude an unlikely scenario they never thought of before: being trapped inside the otome they bought the day before. Each barrier that prevents them from returning their world unlocks after a character is saved from their bad ending.
At some point, events are easy to solve, until it appears like one of the characters is self-aware and doesn't like the idea of MC leaving without them...