go in to where the boy is in the house in cannalave then speak to the boy he will say about darkiria then the sailer comes in and talks to you then go out side click on the sailer he will say could you get a item for my son so he can wake up go to full moon iland then there is cressila who disaperaers and she leaves a poke ball contaning the item.go back to cannalave he will give it to his son and then you are doneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!
Chat with our AI personalities
in the I.N.N in the canalave city (you must have member card and the boy in the canalave city sick and you awaking the boy with lunar wing)
keep trying
the sick boy in Pokemon diamond is in canalave city in the house on the very bottom left corner .x
You can't get it without first getting the National Pokedex. When you get the National Pokedex, go to Canalave City and go to the house next to the sailor. Then he'll be in bed. First talk to him, then his mother.
Go to fullmoon island & catch cressselia.