Previous answer is
Bicchu Kuni Mizuta Kunitsugu

Special feature: Bicchu Kuni Mizuta Kunitsugu studied under the Mizuta Kunishige. He had complete mastery over the Kunishige style.
And he protect that style and made swords.

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Appraisal Quiz #523 (January 26th, 2019)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged

Blade length : 72.9 cm or 28.70 inches.
Sori : 2.9 cm or 1.14 inches.
Mekugi: 3
Width at the hamachi : 3.05 cm or 1.20 inches.
Kasane : 0.78 cm or 0.30 inches.
Era : Nanbokucho period.
Shape : The wide and thick Nagamaki. The blade shape is very massive and healthy.
Jitetsu : Tight Itame hada works very well. It’s called Chirimen Hada.
There is Utsuri.
Hamon : Nie based, Suguha and Ko-Gunome mix. There are many Ashi and Yo.
Boshi is rather tight and Kaeri style.

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