Previous answer is
　 Iesuke
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Special feature: Iesuke is one of the most famous swordsmiths of Ouei Bizen.
The style of Ouei Bizen is a slim blade like this work, which is similar to the works
from the Kamakura period. Most Hamon is Gunome Midare with Choji. In one theory,
Iesuke is said to be a son of Morikage, Kozorimono swordsmith.

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Appraisal Quiz #720 (December 10th, 2022)
Who made this sword do you think ?
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Blade length:48.9cm or 19.25inches.
Sori:0.8cm or 0.31inches.
Mekugi:2
Width at the hamachi:3.02cm or 1.18inches.
Kasane:0.7cm or 0.27inches.
The weight of the sword:440grams
Shape: Very rare Hiradukuri work with 2 lined Hi on the front and Ken between Bohi and Sanskrit on the back.
Jigane: Itamehada mixed with Mokumehada and Chikei. Hadame is visible. Utsuri appears in Ji.
Hamon: Niedeki, mainly Suguha with Ashi. Boshi is Midarekomi.

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