Ah, so happy to hear! It's incredibly heartwarming to see people enjoy the story that we told here. Answering the "How the heck?" - Experience + passion. Regarding in-world text, it is not a new idea, but it isn't a common thing either; I personally only remember such a trick in "What Remains of Edith Finch". For this game, it was indeed a perfect storytelling tool: easy to make, stylish, and powerful.