(Story) to Get Manaphy Legendary Pokémon (BDSP)
Go to the TV station tower in Jubilife City.
Click Town Map Option.
Enter in the town.
Go to the second floor and have a conversation with NPC standing there.
Try to get their opinion about how to improve future programming?
Select YES!
Choose the "Everyone Happy WIFI Connection" option to unlock the mystery gift option in the main menu.
Mystery Gift option unlocked now you can get the Mystery Gift!
After that select the "Get Via Internet" option. your game will be saved.
Choose "Manaphy Egg Gift" from the given options.
Your gift will be unlocked.
Now having this Egg in your team, walk around until it hatches to get Manaphy!
And Manaphy hatched from the Egg!
Choose YES to give Manaphy a nickname.