It depends on your Japanese language study and/or on whether you are of Japanese nationality by birth.
Japanese is the nationality.
Yes, "Japanese" should be capitalized when referring to the nationality or language (e.g., Japanese culture, Japanese cuisine).
The language "French" is 'furansu go' in Japanese, written: フランス語. The nationality "French" is 'furansu jin,' written: フランス人.
Nationality: Japanese
Japanese
Japanese
japanese
Japanese
French is not considered a country, it is a language and a nationality. France is the country associated with the French language and nationality.
Japanese
Japanese .