Kanji » 父・母・兄・姉

my father

someone else's father, a way to call my father

my father and mother

my mother

someone else's mother, a way to call my mother

vowel

my brother

someone else's elder brother
( お兄ちゃん ) ← a way to call my elder brother

my elder sister

someone else's elder sister
( お姉ちゃん ) ← a way to call my elder sister

sibling

sibling