Nigerarenai, Nigasanai summary:

An absolute being worshipped by all, he was a slaughterer who trampled on my life. I, Daphne, was the daughter of the emperor’s favored concubine. I had a childhood more affluent than anyone else’s, but I incurred the emperor's wrath and, despite being a princess, was treated coldly, practically like a maid.The one who showed me kindness was Crown Prince Askeladd, whom I hoped might one day become part of my family. Askeladd had always shone brightly. Everyone was fascinated by him, and everyone submitted to him. As an absolute being who reigned over all, he was no exception to me. He was my god. Yet... The cruel destroyer of my world I had always believed to be beautiful was none other than Askeladd. I tried to escape from the slaughterer who trampled on my life, but...