Previous answer is
　　Mumei (Den Enju Kunimura)　

Special feature: It is valuable that this Enju Kunimura has Ubu Nakago.
You can see the shape of that era. He was called Enju Taro and son of Yamato Hiromura.
He was later called Raikuniyuki. He moved to Higo province and became the founder of Enju school. His swords is few.
The Shinogi has Itame Hada with Masa. The blade lenght is 75.3cm, longer Kissaki nice shape sword.

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Appraisal Quiz #606 (September 12th, 2020)
Who made this sword do you think ?
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Blade length :　68.1　cm or 26.81 inches.
Sori 1.6:cm or 0.62 inches.
Mekugi : 　3
Width at the hamachi :3.0 cm or 1.18 inches.
Width at the Kissaki : 2.2cm or 0.86 inches.
Kasane : 0.6 cm or 0.23 inches.
The weight of the sword: 685 grams.
Shape : Handachi style.
Jigane : Itame hada well grined with jinie attach clear Utsuri apper.
Hamon : Niedeki Kogunome midair,with small ash and yo work,
In hamon, mny sunagshi Kinsuji work especially From the Monouchi to Yokote, very active teemper lines.

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