元気(げんき)でねtake care, take good care of yourself

また会(あ)う日(ひ)まで、元気(げんき)でね。

Until we meet again, take care.

これからもずっと元気(げんき)でね！

I hope you always remain well from now!

あまり体調(たいちょう)の優(すぐ)れない祖父(そふ)に「元気(げんき)でね。」と手紙(てがみ)を書(か)きました。

I wrote a letter to my grandfather, who was not feeling well, saying, 'take care'.

今度(こんど)母(はは)と父(ちち)に会(あ)った時(とき)は、別(わか)れる時(とき)に必(かなら)ず「元気(げんき)でね」と言(い)おうと思(おも)う。

The next time I see my mother and father, I will be sure to say 'take care' as we part ways.

こんな風(ふう)にまたサッカー出来(でき)るように体調(たいちょう)管理(かんり)しっかりしてね、元気(げんき)でね！

Look after yourself so that we can play soccer again like this, take care!