Arjun, 30, whose last big screen outing was 2015 film "Tevar," retweeted the photo with a promise to make the audience smile.
"So I wake up to a surprise myself...Let Kia and Kabir's romance begin. #kiandka this summer we shall make you smile," he wrote.
The Delhi-set relationship saga deals with the nuances of a relationship between a house husband and his ambitious wife.
The film also has a special appearance by Amitabh and Jaya Bachchan.
"Ki and Ka" will hit the screens on April 1, 2016.
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