あらすじ
The transmigration that happened to others happened to me, too. I’m pretty sure I’m now a supporting character… but exactly which novel is this? When I opened my eyes, I was a widow with stepdaughters my own age, and not only that, I turned into a black swan every night due to a dark curse! Holding back my tears, I decided to take charge of my fate…wait, why should I? Why So Serious? A duchess during the day, a queen of the lake during the night – I have the best luck to be able to leisurely float around! Life should be lived unplanned!
あらすじはAniListより（英語）。
