The difference between coming back next time and seeing you next time.

The main difference between "come again next time" and "see you next time" lies in the tone and the meaning expressed.

"Come again next time" is usually used to invite the other person to come again next time or to tell the other person that you are welcome to come again at any time to express a cordial and friendly attitude. Usually used in shops, restaurants, cafes and other places. After welcoming the guests and thanking them for coming, it is expected that they will come again next time.

"See you next time" is to say goodbye to each other, express your thoughts and look forward to seeing you next time. Usually used for colleagues, friends, family and other private occasions to express greetings and expectations when leaving.

Therefore, although "come back next time" and "see you next time" both mean to meet again next time, they are used in different occasions and contexts to express different emotions and attitudes.