Best would be to say 'Anata/kimi ga koishii' (literally: you are so missed)
(Anata would be slightly politer than kimi which is casual for 'you'.)
There are several other ways to express it when you miss someone in Japanese.
You can simply say 'anata ni aitai' (literally: want to see you), or 'anata wo natsukashindeiru' (I miss you), or 'anata ga inakute sabishii' (with you gone I'm lonely).
I miss you in Japanese is Watashi WA anata wo omoitte imasu. 私はあなたを思っています
You may say 'anata ga inakute, sabishii,' written: あなたがいなくて寂しい
You may use the phrase 'anata ga inakute, sabishii,' written: あなたがいなくて、寂しい
Anata ga inakute, sabishii desu.
Watashi WA anata ga fusoku shite imasu.
あなたが本当に恋しい
Anata ga hontōni koishī
Aitai yo
Nic and Rocco
Anata o ketsujō shimasu
ビアさん (Bia-san)
Watashi wa anata ga inakute sabishii
2nd one
"I miss Japan" would be written as 私は日本が恋しい。in Japanese. If you wanted to say it out loud it would be pronounced, "Watashi WA Nippon ga koishii."
there is no differnece !
Watashi wa anata ga inakute sabishii.
aitakatta
Miss you
miss kita - is how you say i miss you in tagalog
"ae naku te sabi sii""会えなくて寂しい"