Light curve of the lensing event KMT-2024-BLG-0404. The lower panel presents the overall view, while the upper panel provides a close-up of the caustic-crossing features. The curve overlaid on the data points represents the best-fit 2L1S model, which was derived by excluding data from the interval 407.5 < HJD′ < 408.0. In the lower panel, arrows labeled t₁, t₂, t₃, t₄, and t₅ mark the positions of specific anomaly features.