Host-subtracted LCs of the 2021 flare. The observation time was converted to phase relative to the discovery date in the rest frame. For clarity, we did not show the upper limits from ASASSN/g observations after +200 days or those from ATLAS/c observations after +500 days, and binned the LCOGT data weekly. We show the t^−5/3 curves that fit the data in UVW2, c, and o bands after +60 days in dashed lines for comparison.