The main protagonist, "Altair" that Zhao Youyue possessed in "White Clover," had affected the author, "Setsuna." Setsuna was now able to perceive her own fantasy even more vividly, which gave her more inspiration to write, but it also drove her novel deeper into the realm of the niche, unappreciated, and obscure.
In other words, "Setsuna" had entered her intoxicated mode. Her current "inspired state" only made her novel even more complicated, but she was having a blast writing it!
"Setsuna" had worked on this literary work just to satisfy herself and divert the attention away from her cancerous disease. She always hoped to be like the main protagonist she had created, because "Altair" always looked like she was laid back and happy, as she was free to roam any realm.