Imouto is for your REAL younger sister and imoutosan for another person's younger sister.
"otouto"if it's your younger brother, "otoutosan" if it's somebody else's younger brother.
White when translated from English to Japanese is shiro for shiro means white
Dog in Japanese is 'inu'.
Chocolate is 'chokoreeto' in Japanese.
Owari
Domo.
Koibito.
Sakarerumono
Yonbanme
何 (nani)
Hajime mashite?
Sumimasen.