As for how to calm down the rampaging Psychic-type Pokémon, Reid had a very clear understanding after having encountered numerous Psychic-types and Psychic Trainers.
Shouting things like "friendship" or "bonds" to try and wake up the opponent would generally only get a passionate, Psychic-infused response.
Besides, he wasn't the type who was good at talking things out. Reid believed there was only one simple and effective method in this situation.
And that was... physical restraint.
Literal, physical restraint.
"Typhlosion, prepare for battle."
"Typh!"
Typhlosion took a few steps forward, positioning itself in front of Reid and facing the rampaging Mesprit, fully prepared for battle.
Despite the battle stance, Typhlosion's expression remained relaxed, its muscles didn't tense up, and even the flames around its neck—signifying its battle state—hadn't ignited.
Reid couldn't help but say, "At least show some respect. That's a legendary Pokémon you're up against."
Hearing this, Typhlosion glanced again at the small figure floating in the air and slightly lowered its center of gravity.
Whoosh!
A deep, sudden sound echoed as flames burst to life around Typhlosion's neck. The temperature in the area noticeably began to rise at an alarming rate.
Leaves and grass on the ground started to wither, and the once-moist air near the lake quickly dried out.
Though it was autumn, it felt as though the heat of summer had forcefully returned, skipping the seasons altogether.
Professor Rowan, standing not far away, felt the extreme temperature change, which was on par with Sunny Day, his usually stoic face showed a rare, proud smile, watching as the youngerster whom he basically raised demonstrate his prowess.
Compared to the calm demeanor of Reid and his Typhlosion, Mesprit was already on high alert.
Even in its berserk state, its instincts as a living being still remained, and being a legendary Pokémon, its senses far surpassed those of regular Pokémon.
Mesprit could clearly feel the waves of heat surrounding it, as well as the intense gaze directed at it.
Even though Typhlosion showed no outward hostility, just standing there exuded a threatening aura that shook Mesprit to its core.
This only served to further confuse Mesprit's already chaotic state, causing its immense Psychic energy to grow even more out of control.
Until it finally... snapped.
With a shrill cry, the strange state where Mesprit fluctuated between transparency and solid form ended, revealing its fully manifested body.
But its eyes, once a soft orange-yellow, had turned blood-red with madness. A terrifying amount of Psychic energy continued to spill from its small body.
Under this overwhelming aura, the surface of the lake beneath Mesprit began to ripple violently, despite there being no wind. The waves spread aggressively towards the shore, and the surrounding plants strained under the immense pressure.
"No surprise, it's a legendary Pokémon. Once it gets serious, it's like facing a monster. Truly terrifying..." Reid muttered as he took in the sight, before turning his attention to Typhlosion.
"Let's finish this with one hit."
"Typhlosion!"
The moment Typhlosion's deep roar echoed, the flames around its neck exploded into a sea of fire, expanding rapidly before contracting back in an instant.
Then, the flames vanished, and with them, the oppressive heat disappeared, as if everything had returned to normal.
"Fire Blast."
Typhlosion took a deep breath, its chest swelling rapidly.
In the next moment, Typhlosion opened its mouth.
In an instant...
A powerful wave of heat and flames burst forth.
A large, fiery cross-shaped flame shot from Typhlosion's mouth, speeding towards the airborne Mesprit.
Meanwhile, in its berserk state, Mesprit sensed the danger, a far greater danger than before. Its instincts screamed at it.
It quickly raised its hands, rapidly gathering a torrent of Psychic energy in front of it. The energy solidified into a heavy force of psychic power, which Mesprit used to counter the oncoming flames.
But even with such a quick response, the moment Mesprit's psychic power collided with Fire Blast, it was utterly overpowered. The attack melted through Mesprit's defenses like they were nothing.
The overwhelming power of the flames went far beyond Mesprit's expectations, but it refused to give up.
As the threat of the flames grew stronger, Mesprit drew upon all its remaining strength, using everything at its disposal in a desperate bid to defend itself.
In the end, it even resorted to the most primitive method—simply unleashing raw energy in an attempt to overpower Fire Blast.
But it was all in vain.
Mesprit could only watch helplessly as the massive fiery cross broke through all its defenses and headed straight for it.
With a sharp cry, accompanied by a massive explosion of flames, Mesprit's body plunged into the lake, disappearing beneath the surface as everything fell silent.
...
Ten minutes later.
Standing at the lake's edge, staring at the now perfectly still surface of the water, Reid's expression was somewhat helpless.
"Typhlosion, it's been a while, and Mesprit hasn't floated back up yet. Did you go a little too hard?"
"Typh?"
Didn't you tell me to finish it in one hit?
"…"
Reid fell silent for a moment before responding, "I did say that... but going overboard doesn't really suit your style. That's more like something Salamence would do."
"Typh... Typhlosion…"
Reid went quiet again.
What do you mean, you just used the same amount of power you always use when fighting other legendary Pokémon, and didn't expect Mesprit to be so fragile?
Is that even something you should say out loud?
Even if it's true, you can't just say it like that.
It's probably a good thing Mesprit hasn't floated back up. If it heard that, who knows if it would go berserk again.
Though...
Reid's gaze swept across the lake once more.
Even though Mesprit is weaker compared to other legends, it's still a genuine legendary Pokémon. Surely it's not that fragile... right?