A Trainer and Child Reunion! (Japanese: 四天王リョウ！出会いと別れの森！Four Heavenly KingsRyou! Forest of Meeting and Separation!) is the 99th episode of the Diamond & Pearl series, and the 565th episode of the Pokémon anime. It aired in Japan on October 23, 2008 and in the United States on March 28, 2009.
Spoiler warning: this article may contain major plot or ending details.
Template:Incomplete synopsis
During their journey, Ash and his friends stop by a town and where they see a large crowd. They hear that Aaron from the Elite Four is having a public practice session. The group, which decides to watch the practice, is unexpectedly invited to Aaron's training center where various Template:Type2 Pokémon live comfortably. In the center, Dawn finds a picture of a young Aaron together with a Wurmple. Aaron tells the group that the Wurmple was his first capture and his best friend.
Details of this episode were made known in K-Zone, a children's magazine, before any official Japanese episode listing. However, the magazine stated that Aaron would appear before Celestic Town, suggesting that it was moved to fit in the one-hour specials at Celestic.
Aaron's signature was shown in this episode. It was his Japanese name in romaji, Ryou. This was not changed in the dubbed version.
