False-color image of the ICL in the region showed in Fig. 1. The background is the composite $\overline{g+r}$ ICL map in grayscale, to facilitate the visualization of the lowest surface-brightness regions of ICL. White circles are masked stars. The blue symbols correspond to the brightest galaxies labeled in Fig. 4. Black arrows show the direction of the intracluster filaments identified by HyeongHan et al. (2024) through weak lensing and named by them as N, W, and SE filaments. Magenta labels indicate ICL features that are described in Sects. 4.2, 4.3, and 4.4. North is up, east is left.