Once you have found your way to the Lotte TV commercials page via the link below, click on the picture of a smiling child being handed a Choco Pie, which can be found both in the carousel at the top of the page and to the right of a row of 'New!' commercials further down.
The ad is short and sweet, so to speak, and the titles and voiceover go something like this:
Choco Pie - today's good points:
Made it one step further
Helped out with the shopping
Managed to ride by myself
You did your best, didn't you?
A treat for every day
Lotte Choco Pie
(Lotte's motto, incidentally is o-kuchi no koibito (お口の恋人), which means 'a sweetheart for your mouth'.)