Using Chroma Key to Create Nobi-chan Man

Nobita sees a woman drinking black tea flying into the sky in a TV commercial. Doraemon gives Nobita a "Chroma Key Set" so he can experience what it's like to be Superman fighting monsters. Doraemon becomes invisible and clones himself, and Mini Nobita plays pranks on his mother in the kitchen. The second clone of the "Starfish Monster," along with a "simple" imitation of a special move from the Ultraman series, surprises Gian, Suneo, and Shizuka. Unexpectedly, Nobita's mother asks him to buy groceries, which makes him feel awkward.