Novel

The translated free version is only like 1/2 chapters more than the manhwa so it's not much to read
https://lilyonthevalley.com/story/119983/

But if you don't mind machine translation then here's the raw
https://booktoki468.com/novel/7576586?stx=%EC%97%B0%EC%95%A0%ED%8E%B8%EC%A7%80+%EB%8C%80%EC%8B%A0+%EC%8D%A8%EB%93%9C%EB%A6%B4%EA%B9%8C%EC%9A%94&book=%EC%99%84%EA%B2%B0%EC%86%8C%EC%84%A4