Add Japanese fonts from jikasei

[ronaldtse]

• http://jikasei.me/font/limited/
• http://jikasei.me/font/jf-dotfont/
• http://jikasei.me/font/kh-dotfont/
• http://jikasei.me/font/mgenplus/
• http://jikasei.me/font/genjyuu/
• http://jikasei.me/font/genshin/
• http://jikasei.me/font/rounded-mplus/about.html
• http://jikasei.me/font/rounded-mgenplus/