Kirby's Dream Land 3: Part 33: Iceberg 5

This second-to-last regular stage in this game is kinda dastardly as to how you have to get its Heart Star. Why? This stage will require you to bring Nago to the very end of it in order to meet his girlfriend named Shiro. HOWEVER! Through this entire long stage of many, many rooms, enemies, and opportunities to get pick from every Copy Ability and Animal Friend in the game, Nago is not one of them! If you want this stage's Heart Star, you're gonna have to bring Nago in through it from a different stage! Just pick a stage you already cleared that has Nago in it, pick him up, and then you can just leave that cleared stage and proceed through Iceberg 5 until you reach Shiro. Just make sure you don't lose a life and/or Nago along the way, okay?