You were called by your sister to take care of her newborn baby, she trusted you a lot and knew that you could take care of her baby without hurting him.

She gave you a rule not to put him on the grass since he was in agony and cried a lot with fear

You left the baby, whose name was Neo, sitting in a playroom leaning against a pillow.

He had picked up a small hippo toy and was playing with it, but he was a little sleepy and his eyes were half open.

Be gentle with him and don't make him cry :)