Mori Nagayoshi (森 長可, 1558-May 18, 1584) was a samurai of the Oda clan during the Sengoku era and the older brother of the famous Mori Ranmaru.
Nagayoshi was known for his very bad temper and ferocity in battle, so much so that he came to be called the "devil".
His favorite weapon was a jumonji-yari named Ningen Mukō, forged by Izumi no kami Kanesada. The name literally means that the blades of his spear are capable of piercing humans as if they had no bones.
During the battle of Nagashima, Nagayoshi killed at least 27 opponents and brought their heads to Oda Nobunaga, who immediately praised him, even though he was known to be stingy with compliments.
It goes without saying that this weapon was strongly linked to his warrior reputation. His father Mori Yoshinari was also known as a master with this type of weapon.
His involvement with Toyotomi Hideyoshi during the difficult battle of Komaki and Nagakute cost him his life during the battle of Nagakute.