WARNING! CONTAINS SPOILERS!

Some links are linked to Japanese Wikipedia or site due to a lack of information about them in English. Please message flowingcloud#8888 on Discord if you do find a site about them or find a better alternative link to any reference. Not all footnotes will be added here, only things that are related to history. All terms will be listed in order of mention within their own respective categories.

Places/Geography
Chapter 1
Izumo Grand Shrine (Referred to Kitsuki-no-Oyashiro in the novel.)
Izumo Province
Mount Sanbe (Can be seen from Izumo Grand Shrine.)
Chapter 2
Gassantoda Castle (Important Izumo strategic location.)
Inaba Province
Touhaku District (Borders Izumo.)
Bitchuu Province
Mimasaka
Chapter 3
Aki Province
Yoshida-Koriyama Castle
Houki Province
Mimasaka Province 
Chapter 4
Satsuma Province
Iwami Ginzan Silver Mine (Within Izumo.)
Suo Province
Chapter 5
Kando District (Japanese Wikipedia; within Izumo.)
Kii Province
Chapter 7
Hii River
Tatenui District (Japanese Wikipedia; within Izumo.)
Hirata (City within Izumo.)
Kanto Plain 
Nobi Plain 
Tokyo Bay 
Tone River 
Nakano Village (Japanese Wikipedia; no exact page.)
Midami Village ([美談郷], Mentioned in Izumo Japanese Wikipedia page.)

Positions and Title
Chapter 1
Tandai (Local Commissioner)
Chapter 3
Dainagon (Major Counselor)
Chunagon (Middle Counselor)
Shobanshu (Followed the lead of the shogun.)
Chapter 6
Hokushu (Military power belonging directly to the shogun.)
Chapter 7
Gundai (Magistrate of a region or an administrator of a town.)
Daikan (Local Governer, rules on behalf of their lord.)
Jodai (Castellan ruling in the absence of their lord.)

Gods
Chapter 1
Amenohohi (God of agriculture, rice ear, sericulture, cotton, industry, and others.)
Chapter 4
Kanayago-kami (Blacksmith god)
Kanayamahiko-no-kami (God of gold mines)
Chapter 7
Mizuhanome (Deity of irrigation water and wells.)

Measurement Units/Systems in Ancient Japan
Chapter 1
Cun (Pronounced ‘sun’ in Japanese, kept as ‘cun’ in the translation.)
Chapter 3
Cho, Kan, Koku, Shaku, Sho, and Tan
Mon (Japanese currency)
Yongle Tongbao (Chinese currency)
Kandaka System (A type of system measuring rice production.)

Clans/People/Organizations
Chapter 1
Tako Tokitaka (Link in Japanese.)
Chapter 2
Amago Yoshihisa (Amago Haruhisa’s second son.)
Yamana Clan
Amago Haruhisa (Tama’s father.)
Oda Clan
Toyotomi Clan
Tokugawa Clan
Chapter 3
Kyogoku Clan
Sasaki Clan
Ouchi Clan 
Mori Clan
Shingu Force
Chapter 4
Toda Clan
Sue Clan (Japanese Wikipedia)
Chapter 5
Tomoe Gozen
Tsuruhime 
Seto Island Sea (‘Steouchi’ in the translation.)
Chapter 6
Amago Sanehisa (Leader of the Shingu Force.)
Amago Ujihisa (Sanehisa’s son.)

Events
Chapter 4
Onin War
Battle of Miyajima
Battle of Okehazama
Chapter 6
Peace Negotiation of Izumo and Aki (Negotiation between the Amago and Mori after Battle of Gassantoda Castle.)

Cultural References
Chapter 1
East Asian age reckoning is when people are born at the sage of one and one year is added to everyone’s age during Lunar New Year or New Year’s Day (depending on the culture).
Chapter 4
Kouji era (Muromachi period)
Eiroku era
Chapter 5
Cursive Script (Calligraphy style.)

Technology
Chapter 1
Seed Flotation Method (Easy-to-understand image in link)
Chapter 4
Senbakoki  (Ancient Japanese threshing tool + Japanese Wikipedia)
Chapter 7
Kanna-Nagashi Mining Method (An early method to collect iron sand. Revolutionary in early modern-style tatara (Japanese furnace) iron manufacturing.