'(This/That/She) is my younger sister.'
'(These/Those/They) are our parents.'
"Shita" is a Japanese word and in English it means "Down"
'It is the first door on the right.'
'It is the second door on the left.'
Where's the bathroom.
Little sister
I think you mean "genki desu ka". The correct way of spelling it in English would be "ogenki desu ka". It is Japanese for "How are you?" One would usually answer by saying "Genki desu. Anata wa?' which means "I'm fine, and you?"
"O-ai dekite ureshii desu" is a Japanese phrase and in English it means "Nice to meet you"
'The second number is 9.'
'The third number is 7.'
'Little sister.'
Bad romaji. Corrected: 'watashi wa anata no tsubasa desu koto wo shitteiru na'. It means 'You know that I am your wings'.