This article is for the gadget itself.
For the character, go to Doraemon's Substitute Mom.

Substitute Mother Egg (オフクローのたまご) is a Doraemon's gadget.


Once the button is pressed, a timer will be set, after a few seconds, the egg will shine and "hatch", inside the egg contains an owl-like robot who will register the first living thing she sees as her own child, and will take care of whoever that is for 8 hours exactly like a mother would. After 8 hours the robot will be deactivated.

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