The earliest development of the story was manually inputting setting them to a list of strings on Visual Studio. When I was developing the demo, I followed a series of tutorials and hard coded everything by hand.

The initial screen uses a UI panel with the text being displayed within the semi-transparent panel. 

Later on in the development, I discovered Ink, and started looking at tutorials to integrate Unity with Ink. After a few tries and a couple of different tutorials, I found one that actually managed to work and compile for what I need; however, it required a continue button (like the one shown in the image above).

Afterwards, it really came down to understanding the Ink interface and writing the story. Initially, I thought about having 3 love interests, but that slowly faded out as I wrote the story.

Play testing suggested that I should have multiple endings. I ended up going with a relatively college story (where a subtle hint of possible future romance) but with multiple endings. Despite having a relatively simple story (it still took hundreds of lines of writing).