Short for 日本国 (Nihon-koku): Japan (a country and archipelago in East Asia) / a surname

(Internet slang) a “sickness” in teenagers characterized by sophomoric, edgy, and/or pretentious behavior (trying too hard to be special in unusual ways)

characterized by such behavior

the whole story, all of the details

first / number one / primary

ordinal marker, often with affix 号

first, foremost, number one

(behavioural sciences) metatool

御中: belly, tummy, stomach, abdomen; a meal, especially of rice; cotton batting; (historical) the title of a maid working in the inner part of a samurai family's house during the Muromachi period

middle / in