Previous answer is
Mumei (Aoe school 青江)

Features:　The Aoe school was active in Bitchu Province from the Kamakura period through the Nanbokucho period.
Works from the mid-Kamakura period are referred to as Ko-Aoe, while later pieces are simply called Aoe.

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Appraisal Quiz #871 (November 8th, 2025)
Who made this sword do you think ?
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Blade Length: 62.9 cm (24.76 in)
Curvature: 1.2 cm (0.47 in)
Mekugi Hole: 2
Width at Base (Motohaba): 2.87 cm (1.13 in)
Width at Tip: 2.011 cm (0.79 in)
Thickness of rim (Kasane): 0.59 cm (0.23 in)
Sword Weight: 565 g
Shape: A well-proportioned blade with standard width and thickness.
Jigane: Itame-hada is well-forged with a clear nioiguchi and visible utsuri.
Hamon: Made with nioi-deki in a varied gunome-midare pattern.
The boshi shows midare-komi.
Inside the blade, kinsuji activity is observed.

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