You may say something along the lines of "Niichan, konnichiwa."
"Minasan, konnichiwa" is how you can say it.
You could say, 'niichan, denaide!' written in Japanese as: 兄ちゃん、出ないで
Konnichiwa, hope i helped :)
I believe it would be "Watashi no tomodachi, Konnichiwa"
Konnichiwa (Kon-ee-chee-wa), is basic hello, and means Good Afternoon Domo (Doh-mo), is informal way of saying hello
Hello in Japanese is こんにちは (pronounced "konnichiwa"), in Chinese it is 你好 (pronounced "nǐ hǎo"), and in Thai it is สวัสดี (pronounced "sawasdee").
In Japanese you say onii-sanonii-san is older brother. Nissan (Ni-san) is big brother. However, this is the formal way. For a more relaxed informal way, you delete the san and replace it with a Chan.I.e: Onii-Chan : Older brother
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konnichiwa
Hello in Japanese symbols.. = こんにちは (:
hello. you say googoogaga
"Minasan, konnichiwa" is how you can say it.
'Niichan no koto o shimpai shite iru yo.'
مرحبا اخي
you say ''anna'' in order to say big brother in tamil
Hello = konichiwa Tiny = chitcha Small = chibi, chisai
You could say 'hamamatsu kara, konnichiwa.'