How do you say "I hope you get better" in Japaneses?

yeah actually they usually say 'odaiji ni,' which is like 'get well soon'

Daijobu desu ka

-pronounced: dah-ee-johh-boo-deh-soo kah

it is literally "are you okay" but can be used for this too

"I hope you get better" can literally translated in Japanese as:

あなたが良くなることを願っています。

anata ga yokunaru koto wo negatte imasu.

More commonly:

元気になります様に

genki ni narimasu youni

Friendly:

元気になってね

genki ni natte ne

"Kaifuku shite (ne)."

(Rocover, please!)

Yoku natte (ne)."

(Get better, please!)

Kaifuku suru to ii ne."

(I hope you'll recover.)

"Yoku naru to ii ne."

(I hope you'll get better.)