UV absolute magnitude, M₁₄₅₀, as a function of Lyα luminosity of SHELLQs quasars. Broad-line (FWHM(Lyα) ≥ 500 km s⁻¹) and narrow-line (FWHM(Lyα) < 500 km s⁻¹) objects are plotted with blue circles and red squares, respectively. The four Chandra targets are circled in red. The dashed line indicates the best linear fit to both broad- and narrow-line objects. The two dotted lines show the 95% compatible intervals. Data for LAEs at z ∼ 6 detected in the Subaru HSC survey from Shibuya et al. (2018) are also plotted in grey for comparison. Crosses are LAEs for which UV continuum emission was detected, while triangles are those for which only upper limits of UV emission were obtained.