core/homeassistant/components/demo/translations/select.ja.json

{
    "state": {
        "demo__speed": {
            "light_speed": "\u30e9\u30a4\u30c8\u306e\u901f\u5ea6",
            "ludicrous_speed": "\u3070\u304b\u3052\u305f\u901f\u5ea6",
            "ridiculous_speed": "\u3068\u3093\u3067\u3082\u306a\u3044\u901f\u5ea6"
        }
    }
}