Previous answer is
　Mumei(Tegai)　

Special feature : The relation of the Nara Temples and Yamato sword makers are close rinkage
and main gate of the west Todaiji temple which is called Tengaimon area
was made many swords for the armed priest by sword makers.
These sword makers were served as vassal of the Todaiji temple.
The founder of the Tegai school was Kanenaga started from Syoo era or more old (1288)
The tegai school continued to Late Muromachi and also Edo period.

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Appraisal Quiz #551 (August 10th, 2019)
Who made this sword do you think ?
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Blade length :　27.0 cm or 10.62 inches.
Sori : 0.2 cm or 0.07 inches.
Mekugi : 1　
Width at the hamachi : 2.88 cm or 1.13 inches.
Kasane : 0.56 cm or 0.22 inches.
Weight of the blade: 210 grams
Shape : The blade is wide and thick with sakizori style healthy blade.
Jigane :Koitame hada well grained with jinie attach and chikei work.
Hamon :Niedeki deep nioikuchi gunome midair hamon with ashi,
sunagashi and also kinsuji work like summer clouds in the sky.
Boshi is round shape.
Hints. ※The picture will be enlarged

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Answer will be posted at next Appraisal Quiz.

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