Pokémon Trainers Pearl and Diamond are starstruck! Their lifelong dream is to floor an audience with their Pokémon comedy act. So how do they wind up as bodyguards to a pampered little rich girl on a quest to reach the peak of Mt. Coronet...?!
 
Come along and join the thrills and laughs as Pokémon Adventures continues!
 
Plus, meet Starly, Bidoof, Luxio, Combee, Bronzor, Rotom and many more Sinnoh Pokémon friends!
 
(Source: Viz Media)
 
In the Viz Media release, the Diamond & Pearl arc’s volumes were collected under the same title as the Platinum arc; this entry is exclusively for the Diamond & Pearl arc.

Red is just a normal kid living in the rural Pallet Town, when he decides to go out on his own adventure, along with his rival since childhood, Green. In this world of Pokemon, he makes many friends, humans and Pokemon alike. However, all is not well. Team Rocket is trying to capture Mew, a very rare Pokemon, and is performing experiments on other Pokemon, trying to increase their power. Red and his friends must battle against Team Rocket to stop their cruel experiments and unlock the secrets of Pokemon.

Finally together again, Dia, Pearl, and Platinum must battle Legendary Pokémon Dialga and Palkia, who are being controlled by Cyrus, the powerful boss of Team Galactic! Then a new Legendary Pokémon leaps into the fray! Whose side is it on...?
 
And who will rescue Platinum’s hapless bodyguards from the mysterious Distortion World they’ve been banished to...?
 
Plus, hang with Lopunny and meet Porygon-Z, Gallade, and... Looker?!
 
(Source: Viz Media)
 
In the Viz Media release, the Diamond & Pearl arc’s volumes were collected under the same title as the Platinum arc; this entry is exclusively for the Platinum arc.

The chapter begins with focus on a Trainer named Emerald, who is sent by Professor Oak and Crystal to catch Jirachi within seven days. On arrival at the Battle Frontier, he accidentally interferes in the opening ceremonies and gains the second challenge of clearing the seven Facilities by defeating the Frontier Brains within that time. During this time, Emerald befriends Todd Snap and discovers that the masked Guile Hideout is seeking Jirachi for evil purposes.
 
(Source: Bulbapedia)

Special one-shot commemorating the release of the games with the same name.

Most kids spend their days at school, but not Hareta. Raised in the wild by Pokémon, he can climb as high as an Aipom, swim as fast as a Magikarp, and even eat bark like a Bidoof!
 
Recruited by Professor Rowan, Hareta decides to become a Pokémon Trainer. Along with his first Pokémon, Piplup, and his new friend Mitsumi, he sets off in search of the legendary Pokémon Dialga. But Team Galactic is hunting for Dialga too. Can Hareta and Piplup defeat Team Galactic and stop their evil plans?
 
(Source: Viz Media)
 
Included side stories: 
Volume 3 - Deoxys, The Phantom Pokémon! (Part 1); Deoxys, The Phantom Pokémon! (Part 2) 
Volume 4 - The Tale of Hareta and Shaymin 
Volume 6 - Mitsumi's Wish 
Volume 7 - Return to Hareta's Home Forest! 
Volume 8 - Hareta's Future

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