Once Upon a Time - In a Isekai World

Once Upon a Time - In a Isekai World is a 3DCG dating sim for players who want a fantasy harem story with a selfish protagonist at its center. The tone leans unapologetic and blunt before it gives way to something more personal.

Story

The protagonist has always taken what he wanted, discarding people and things once they stop being useful, with no regard for consequence. That habit catches up with him when his life takes a sudden, disastrous turn, one that ends everything he knew while opening the door to something entirely different.

Gameplay

Play centers on guiding this protagonist through his new circumstances, talking with and getting closer to the women he meets along the way. Choices shape how he treats the people around him and which relationships he pursues, with the story unfolding through rendered scenes and character interactions rather than open exploration.

Features

• Rendered 3DCG scenes with animated sequences throughout
• A protagonist written with a deliberately selfish starting point, giving his arc room to shift
• Multiple romanceable characters as part of an ongoing harem structure