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We present the detectability of strong mid-infrared (MIR) light echoes fromfaint debris disks illuminated by bright superflares of M-dwarf stars.Circumstellar dust grains around an M-dwarf star are simultaneously heated bysuperflare radiation. One can thus expect their re-emission in the MIRwavelength regime. According to our model calculations for the Proxima Centaurisystem, the nearest M-dwarf star system, thermal emission echos from an inner($r < 1~{\rm au}$) debris disk with a total mass down to that of the solarsystem's zodiacal dust are expected to emerge at wavelengths longer than $\sim10~{\rm \mu m}$ with a strength comparable to or greater than a white-lightsuperflare. Also, observable echos from inner- ($r \lesssim 0.5~{\rm au}$)debris disks irradiated by energetic ($\gtrsim 10^{33.5}~{\rm ergs}$)superflares of nearby ($D < 3~{\rm pc}$) M-dwarfs are expected. Our simulationresults indicate that superflare monitoring using high-speed opticalinstruments like OASES and its prompt follow-up using ground-based MIRinstruments, such as TAO/MIMIZUKU, can detect these MIR light echoes fromdebris disks around solar neighborhood flare stars.

Faint debris disk peering through superflare light echo