One of the most famous smiths of history. Morimitsu started a style revolution that became the marker of the times throughout Japan, known as "Oei style". He was the head of the Osafune school for his generation, headmaster in his turn of the long line of Osafune Headmasters.  See Morimitsu and the Oei

O-Suriage, Shinogi-Tsukuri, Ihori Mune with Bo-hi
Ji-nie dresses Mokume Hada that has running Ita. Wide Bo-Utsuri. 
Nioi Koshihiraki Choji-Midare Ba. There is a bright Nioi-guchi, line of Habuchi.
Midare-komi Boshi
With Tokubetsu Hozon NBTHK paper