List of english translated dating sims
Likewise, many commercial games have a Slice of Life setting.
If your setting is realistic, then make sure you can portray it in a way that the audience will find interesting.
Instead, write a few scenes, or get some of your gameplay to work.
If your story takes place near a school, and nearly every important character is under twenty years old, then there's a chance that your story may seem trite even if it's original. Make sure any Meet Cute scenes are not just random occurrences.
Strive to add distinct elements to your game/story which will be obvious from the very first scene. It's possible to create a multi-path game with an Official Couple.
This might even make the other characters Pretty Freeloaders.
However, there are examples of ren'ai games which take place in diverse genres, including but not limited to fantasy, science fiction, horror... These can often vary from good to bad to nihilistic.
Don't let all of them be happy, because if the main character is not allowed to fail, then your story/game may lose its emotional impact.