Also known as: 北条菊寿丸, Houjou Nagatsuna (北条長綱)

Historically: A warlord of the Houjou clan in the Sengoku province of Sagami, the fourth and youngest son of Houjou Souun and a concubine from the influential Katsurayama Clan. He entered Kongouou Temple, the bettou-ji (administrative temple) of Hakone Shrine, at a young age and later became its head. He took the name of Gen'an (lit. Phantom hermitage) upon his retirement.

He had three sons, all of whom died before him, and two daughters. He adopted Houjou Saburou (Uesugi Kagetora) as his heir, but the adoption was annulled when Kagetora was sent to Echigo. His grandson Ujitaka (son of his second son) later became his heir.

Houjou Genan was described as a master of horsemanship and archery who led armies, but also a man of culture who was skilled with his hands. He became elder statesman and trusted adviser to Ujiyasu and Ujimasa. He was 97 when he died (though opinions differ); eight months later, the Houjou clan was attacked by Toyotomi Hideyoshi and destroyed.