A 'Harvest Moon' pregnant fanfic can add depth to the existing game world. In the game, family and relationships are important aspects. A pregnancy can bring about new challenges and growth for the characters. For instance, if it's a female character, she might have to balance her usual tasks like taking care of the farm and animals with her pregnancy. Fanfic writers can explore the emotional journey of the character during this time, from the initial shock to the anticipation of motherhood.
No, they're not the same. Story of Seasons is a new series that developed from the Harvest Moon franchise but has some distinct features and gameplay differences.
They aren't identical. Harvest Moon was the original, and Story of Seasons is a continuation with its own tweaks and improvements. The worlds, quests, and overall feel can vary between the two.
Another great 3ds visual novel is 'Zero Escape: Virtue's Last Reward'. It combines elements of mystery, science fiction, and puzzle - solving. The story is full of twists and turns, and players have to make choices that can lead to different endings, which adds to its replayability.