a first, start, a beginning / (slang) first sexual relations, one's first time

inside

human / person / people / individual / man / woman / someone

rice paddy / cultivated field

富士山: Mount Fuji / (name ふじ + suffix さん) Mr/Ms Fuji

society, company / the public, the world

person who is inside a kigurumi costume / (by extension) person behind something / voice actor of a character

using lip service to trick someone

is the best among (others)

blossom