In the future space-time, the World Tree died for unknown reasons and when Fang Yuan and his team examined the World Tree remnants, the Mane Rock Werewolf discovered the black negative energy within them.
This type of negative energy originated from the universe and was a malignant virus for planets, capable of eroding the ecological origins of the world, particularly effective against the World Tree that was one with the planet.
Moreover, due to the fragmented state of the Pokémon World, the current World Tree was still incomplete.
Fang Yuan and his team suspected that the death of the World Tree in the future space-time was very likely due to energy exhaustion and subsequent invasion by negative energy at a vulnerable moment.
There were few Pokémon capable of detecting cosmic negative energy, and even the World Tree and the ecosystem controller Zygarde were unable to do so. Fang Yuan's Mane Rock Werewolf and Xiaozhi's Greninja were Pokémon with special talents. They could see it, and had it not been the case, Xiaozhi's Frogadier wouldn't have been lured away by Z God.
It now seemed that what caused Mew to become unusual was indeed the negative energy. Only this kind of thing could go undetected by Mew.
However... there was nothing wrong just a few days ago; how could the negative energy suddenly infect the World Tree and Mew overnight??
"Mew..."
In midair, Mew did a few circles, and upon realizing it indeed felt better, immediately showed a surprised and relieved expression.
"So you don't need to worry. After discovering negative energy within the remnants of the World Tree in the future space-time, the Mane Rock Werewolf was concerned that you and the World Tree in this time-space would also be invaded by the virus. It studied those remnants for a long time," Fang Yuan said. "It chose to attempt a Super Ancient Transformation because the essence of this transformation is to absorb and control negative energy. It had foreseen this kind of situation might occur and never relaxed its rigorous training to control the negative energy."
"Mew..." Little Dream was a bit frustrated, suddenly feeling like it and the World Tree had raised the Mane Rock Werewolf for nothing. If only it were not so rowdy all the time.
Looking back, it saw the Mane Rock Werewolf had already sprinted off, presumably to check on the World Tree's condition.
......
Inside the World Tree, blue crystals were scattered everywhere.
The Mane Rock Werewolf ran through the myriad of blue crystals, inspecting them carefully and conscientiously.
Because it sensed that the World Tree's condition wasn't good, its movements were extremely cautious, understanding that the World Tree at this moment was not the same one that could casually thrash it during teaching.
Every time it found an area infected by the negative energy virus, it gently touched the World Tree, absorbing the spreading negative energy.
It truly was almost overnight that the World Tree had been invaded by negative energy.
After absorbing a great deal, the Mane Rock Werewolf still found many viruses active.
Luckily, this time-space's World Tree had a complete immune system thanks to Victini's energy replenishment before, so even though it was invaded by viruses, it didn't react excessively. However, the World Tree of the future space-time wasn't so fortunate.
"Awoo~"
While quickly helping the World Tree expel the negative energy virus, the Mane Rock Werewolf infused Wave Guide energy and anxiously inquired about the World Tree's condition.
The World Tree was indispensable; in the heart of the Mane Rock Werewolf, the World Tree held the same importance as Fang Yuan, like another Trainer to it. Evolution, training, battles—the World Tree had also given the Mane Rock Werewolf much company. Although both the World Tree and Mew were often troubled by the werewolf's racial instincts, they knew it was characteristic of the Mane Rock Werewolf's species to be dependent and close to them. The boisterous behavior might be a bit much, but that was their own child after all.
The Thunderbolt between Xiaozhi and Pikachu, and the seemingly aggressive touches such as Team Rocket James's interactions with his Pokémon, like Needle Cage and Cactus Hermit, were all manifestations of their bonds.
When the moment of truth arrived, the Mane Rock Werewolf did not slip up; it took up the responsibility of World Tree Guardian.
Whoosh whoosh whoosh.
The interior of the World Tree shimmered with the sparkling light of Wave Guide energy, as though providing the Mane Rock Werewolf with a response.
As the World Tree coexisted with Mew, even though it also possessed remarkable power, it had no way to resist this universal virus that specialized in countering it. It wasn't something that could be resolved through force alone, but through reliance on its own immune system to repel. Fortunately, the ancient form of the Mane Rock Werewolf specialized in countering negative energy, allowing it to quickly and effectively exterminate the virus.
With the help of the Mane Rock Werewolf, the vital activities of the World Tree gradually returned to normal functioning and began to be able to convert sunlight back into nutrients for survival. This eased the Mane Rock Werewolf's worries.
......
At the heart of the World Tree.
Despite the Mane Rock Werewolf's presence, Fang Yuan still had Hoopa summon Mewtwo and X Deer, to be on the safer side.
Mewtwo, busy helping Fang Yuan build a Cosmic Battleship, was begrudgingly pulled over.
Upon learning about Mew's condition, it immediately became anxious and joined the health assessment of the World Tree.
In the Diamond Mine Nation, X Deer, who Fang Yuan had forcibly retained to teach Xie Qingyi and to also advise Princess Tianxi of the current generation, was roped in as well.
And together with Celebi, they did their utmost to assist and regulate the ecological environment within the World Tree Mystical Realm, closely connected to the World Tree.
Besides, Eevee, Fang Yuan, Victini, the Lake Trio, and other Pokémon were also at the core of the World Tree, infusing Wave Guide energy into the World Tree like it was free, adjusting its condition.
"Mew..."
Feeling its own and the World Tree's condition gradually recover, Mew floated in the air with a sense of relief.