Is It Possible to Display the Contents in Other Languages?

By selecting Account Settings > Profile and changing "Language", you can change the language displayed in Kintone to Japanese, English, or Chinese.
For details, refer to the Changing the Display Language and Time Zone page.

You can also configure the "Localization" setting for each app.
By configuring the "Localization" setting, you can display app descriptions and field names in the "Language" you specified in your profile.