Spectrum along i = 21° through the MHD model with μ = 0.0010 convolved with XRISM response function for 100 ks exposure. The source has a flux of 3.15 × 10⁻⁹ ergs cm⁻² s⁻¹ (∼132 mCrab) (consistent with the incident spectra generated in Sect. 3), and corresponds to a total number of 800 photon counts in the energy range 6.0−8.0 keV. Top: simulated spectra (solid, red line) along with the model (diskbb+power-law; dashed, black line) to fit the continuum after the optimal binning. Bottom: ratio of data and model.