Japanese phrase
ひとつよろしくお願いします。 hi to tsu yo ro shi ku o nega i shi ma su
Meaning
Please take care of this.
When to use it
Politely asks for proper handling of a matter. It commonly appears at the end of a request and can sound friendly as well as respectful.
Example dialogue
明日の準備、ひとつよろしくお願いします。 asu no jun bi hi to tsu yo ro shi ku o nega i shi ma su
Please take care of the preparations for tomorrow.
はい、任せてください。 ha i maka se te ku da sa i
Sure, leave it to me.