"otouto"if it's your younger brother, "otoutosan" if it's somebody else's younger brother.
older brother=oniisan younger brother=otooto
兄: ani (older brother) 弟: otouto (younger brother) the word for older brother is 'o-ni-i-sa-n' the word for younger brother is 'o-to-u-to' (phonetic hiragana spelling)
Imouto is for your REAL younger sister and imoutosan for another person's younger sister.
Otouto is younger brother, ani is older brother.
otouto
Oneesan is older sister. Imoutosan is younger sister. Older sister is onee-chan and younger sister is imouto. Also, older brother is onii-chan and younger brother is otouto. Older sister - (when you're talking to her or talking about someone else's sister) is Onee-san. If you're talking about them to someone else, then it's ane. Younger sister - Imouto
Your younger brother: Otoosan (polite) Your elder brother: oniisan (polite)
otouto = younger brother otouto san WA _____ = my younger brother is _____ You call your little brother otouto. If it is a baby you can refer to it as akachan as well, but it seems a little distant.
You may say 'ani' for older brother, and 'otouto' for younger brother, written (in that order): 兄 弟
lil bro
'mon petit frère' is 'my small brother' in English.
Cain is Able's younger brother. In the Bible, they are two of the sons of Adam and Eve. Cain is known for killing his brother Abel out of jealousy.