racially pure Japanese person
Refers to a person of unmixed Japanese ancestry, often used in discussions of ethnicity or identity. Can carry a slightly formal or analytical tone.
He is a racially pure Japanese person, but since he grew up abroad, he struggles with Japanese.
Not only pure Japanese people but also people with various roots live in this area.
Refers to a person of mixed Japanese and non-Japanese heritage, often used colloquially. 純日本人 is the opposite concept, emphasizing unmixed ancestry.
General term for a Japanese person, without specifying ancestry. 純日本人 explicitly adds the nuance of racial purity.
Compound of 純 (pure) + 日本人 (Japanese person). The exact origin is uncertain, but it likely emerged in modern contexts discussing ethnic identity.