By a Japanese law
Naturalization) (Kika)
ツ(窶ケA窶ーツサツ)
Article 4
窶佚ヲ4ツ湘ー Article 4. A person who is not a Japanese national (hereinafter referred to as "an alien") may acquire Japanese nationality by naturalization.
窶愿コ窶怒ツ坂?倪?督ッ窶堙??堙遺?堋「ナステ陳(ヒ?遺?ーツコツ「ナ?Oツ坂?伉人ツ」窶堙??堋「窶堋、ツ。ツ)窶堙債、窶ケA窶ーツサ窶堙俄?堙ヲ窶堙≫?堙?、窶愿コ窶怒窶堙個坂?伉静絶?堙ーナステヲ窶慊セ窶堋キ窶堙ゥ窶堋ア窶堙??堋ェ窶堙??堋ォ窶堙ゥツ。
2 The permission of the Minister of Justice shall be obtained for naturalization.
窶ケA窶ーツサ窶堙ー窶堋キ窶堙ゥ窶堙俄?堙債、窶邸窶督ア窶佚・ツ臣窶堙娯?ケ窶凪?ーテや?堙ー窶慊セ窶堙遺?堋ッ窶堙ェ窶堙寂?堙遺?堙ァ窶堙遺?堋「ツ。
Article 5
窶佚ヲ5ツ湘ー The Minister of Justice shall not permit the naturalization of an alien unless s/he fulfills all of the following conditions:
窶邸窶督ア窶佚・ツ臣窶堙債、ナスナク窶堙個湘ーナ陳鞘?堙ー窶敕オ窶堋ヲ窶堙ゥナ?Oツ坂?伉人窶堙??堙遺?堋ッ窶堙ェ窶堙篠、窶堋サ窶堙娯?ケA窶ーツサ窶堙ー窶ケ窶凪?ーテや?堋キ窶堙ゥ窶堋ア窶堙??堋ェ窶堙??堋ォ窶堙遺?堋「ツ。
(1) that he or she has domiciled in Japan for five years or more consecutively;
ヒ?ク窶堋ォ窶伉ア窶堋ォナ津懌?扼ヒ?按湘」窶愿コ窶怒窶堙可住ツ焦?窶堙ー窶猫窶堋キ窶堙ゥ窶堋ア窶堙
(2) that he or she is twenty years of age or more and of full capacity according to the law of her/his home country;
窶愿アツ十ツ催射?按湘」窶堙??怒ツ坂?倪?邸窶堙俄?堙ヲ窶堙≫?堙??拿窶氾坂?堙ー窶猫窶堋キ窶堙ゥ窶堋ア窶堙
(3) that he or she is of upright conduct;
窶惑ツ行窶堋ェ窶榔窶氾??堙??堋?窶堙ゥ窶堋ア窶堙
(4) that s/he is able to secure a livelihood by one's own property or ability, or those of one's spouse or other relatives with whom one lives on common living expenses;
ナスツゥナ津遺?凪?昶?堙債青カナ致窶堙ーヒ?ェ窶堙俄?堋キ窶堙ゥ窶掏窶ケテエナステ停?堋サ窶堙娯?伉シ窶堙個親窶伉ー窶堙固ス窶佛スY窶凪?昶?堙坂?ケZ窶拿窶堙俄?堙ヲ窶堙≫?堙?青カナ致窶堙ー窶ーc窶堙樞?堋ア窶堙??堋ェ窶堙??堋ォ窶堙ゥ窶堋ア窶堙?。
(5) that s/he has no nationality, or the acquisition of Japanese nationality will result in the loss of foreign nationality;
ツ坂?伉静絶?堙ー窶猫窶堋ケ窶堋クツ、窶凪?昶?堙坂?愿コ窶怒窶堙個坂?伉静絶?堙固ステヲ窶慊セ窶堙俄?堙ヲ窶堙≫?堙??堋サ窶堙個坂?伉静絶?堙ーナスツク窶堋、窶堙冷?堋ォ窶堋ア窶堙?。
(6) that s/he has never plotted or advocated, or formed or belonged to a political party or other organization which has plotted or advocated the overthrow of the Constitution of Japan or the Government existing thereunder, since the enforcement of the Constitution of Japan.
窶愿コ窶怒ツ坂?佛停?コ窶邸ナス{ツ工窶堙娯?愿コヒ?闇津」窶堙俄?堋ィ窶堋「窶堙?、窶愿コ窶怒ツ坂?佛停?コ窶邸窶凪?昶?堙坂?堋サ窶堙娯?ーツコ窶堙可青ャ窶板ァ窶堋オ窶堋スツ青ュ窶「{窶堙ー窶貼窶氾坂?堙??挧窶ーテウ窶堋キ窶堙ゥ窶堋ア窶堙??堙ーナ?テゥ窶堙?、ナステ。窶堋オ窶堋ュ窶堙債、ナステ・窶卍」窶堋オツ、窶凪?昶?堙坂?堋ア窶堙ェ窶堙ーナ?テゥ窶堙?、ナステ。窶堋オ窶堋ュ窶堙最ステ・窶卍」窶堋キ窶堙ゥツ青ュ窶怡窶堋サ窶堙娯?伉シ窶堙娯?冂窶佚娯?堙ーナ停?ケツ青ャ窶堋オツ、ナステ。窶堋オ窶堋ュ窶堙坂?堋ア窶堙ェ窶堙俄?ーテ≫?愿シ窶堋オ窶堋ス窶堋ア窶堙??堋ェ窶堙遺?堋「ツ人ツ。
2 When an alien is, regardless of his or her intention, unable to deprive herself/himself of her/his current nationality, the Minister of Justice may permit the naturalization of the alien, notwithstanding that the alien does not fulfill the conditions set forth in item (5) of the preceding paragraph, if the Minister of Justice finds exceptional circumstances in her/his family relationship with a Japanese national, or other circumstances.
窶邸窶督ア窶佚・ツ臣窶堙債、ナ?Oツ坂?伉人窶堋ェ窶堋サ窶堙戸?毒スv窶堙俄?堋ゥ窶堋ゥ窶堙ュ窶堙ァ窶堋ク窶堋サ窶堙個坂?伉静絶?堙ーナスツク窶堋、窶堋ア窶堙??堋ェ窶堙??堋ォ窶堙遺?堋「ツ湘ェツ坂?。窶堙俄?堋ィ窶堋「窶堙?、窶愿コ窶怒ツ坂?倪?督ッ窶堙??堙個親窶伉ーナ?テ滅淡窶凪?昶?堙坂?ケツォ窶ケテカ窶堙俄?堙や?堋ォ窶愿≫?「テ岩?堙固ス窶督湘ョ窶堋ェ窶堋?窶堙ゥ窶堙??戳窶堙溪?堙ゥ窶堙??堋ォ窶堙債、窶堋サ窶堙固ステ停?堋ェ窶楼ツ坂ぎ窶佚ヲナ津慊坂??窶堙嫁断窶堋ー窶堙ゥツ湘ーナ陳鞘?堙ー窶敕オ窶堋ヲ窶堙遺?堋「窶堙??堋ォ窶堙??堙?ツ、窶ケA窶ーツサ窶堙ー窶ケ窶凪?ーテや?堋キ窶堙ゥ窶堋ア窶堙??堋ェ窶堙??堋ォ窶堙ゥツ。
http://info.pref.fukui.jp/kokusai/tagengo1/html_e/konnatoki/5kekkon/c_hou/hou.html