The phrase "welcome to Japan" would be 日本へようこそ (nihon e youkoso) in Japanese.
日本 (nihon) - Japan
へ (e) - to
ようこそ (youkoso) - welcome
You can say le-le or liyo.https://www.livinglanguage.com/community/discussion/315/saying-youre-welcome-in-japanese-not-recommended
kalsa anoka
"Irasshaimase." "Youkoso."
You may say 'youkoso.'
シチュー You're welcome.
The word "Nihon" translated to English means Japan. When the Japanese people refer to their land, they say Nihon or Nippon (日本)Similarly, they don't call themselves Japanese, they say they are Nihonjin 日本人meaning 'Japan person'= Japanese---"Nihon" is Japanese for the word "Japan". In Japanese, one doesn't say "Japan", they say "Nihon".Nihon ni itta. (I went to Japan.)It's not, "Japan ni itta"
When a customer enters, you may say 'irasshaimase.'
'Guamu e youkoso.'
kyoukai e yokoso
日本へようこそ
Nihon no nikuya = Deli of Japan
'Welcome to school' would be学校へようこそ (gakkou e youkoso) in Japanese.