"It's the sea monster tide, my Lord. The sea monster tide has arrived. You can directly see the situation at the river from atop the rock walls," Nyfarella reported while pointing over the wall to the closest river.
However, Leon did not need to scale the rock wall to see the situation; he directly used the realm spirit's omniscience to observe the overall situation in the realmship.
He immediately saw several ten thousand sea monsters, big and small, pouring into the Bone Sea through the river channels like a tightly packed group, leaving little-to-no gaps in between them.
At the same time, their rapid movements rocked the usually calm river surface in waves.
God knew how many more sea monsters were still fighting to enter the realmship from beyond the western edge.
Leon paid particular attention to the sea monsters' strength which varied from Low-rank Lesser Demons to Mid-rank Arch Demons.
After the sea monsters entered the Bone Sea, they immediately attacked the pre-existing sea monsters occupying the sea region as if they were waging war on each other.
Within moments, blood bloomed from the depths of the Bone Sea as the sea monsters slaughtered each other.
Nevertheless, Leon's focus didn't stay on the primary battle for long before shifting elsewhere.
The sea monsters from the sea monster tide clearly came to the Bone Sea with a purpose, and that was what he wanted to find out.
While the weaker sea monsters fought closer to the sea surface, the stronger Arch Demon-level sea monster dived into the depths of the Bone Sea.
They didn't stop plunging deeper in the depths of the Bone Sea until the other pre-existing Arch Demon-level sea monsters in the Bone Sea attacked them first.
Leon's eyes quickly flickered at the situation.
'The sea monsters from this sea monster tide seem to want something from the depth of the Bone Sea… But I wonder what it is?' Leon mused.
It didn't take long before he suddenly raised an eyebrow at another discovery.
"Oh?" Leon uttered.
The High-rank Arch Demon-level sea monsters began moving away from their sea region in deeper waters to join the battle in the upper levels.
However, it wasn't just the High-rank Arch Demon-level sea monsters that moved.
Even the Peak-rank Arch Demon-level sea monsters left the seafloor region after receiving sonar signals from the High-rank Arch Demon-level sea monsters.
Leon wouldn't have imagined that the Peak-rank Arch Demon-level sea monsters would move away from the seafloor region.
'The sea monsters in the Bone Sea are actually communicating and making coordinated movements to resist the foreign sea monsters' invasion… is this territorial battle?'
Leon wondered with a surprised look.
Now that he thought about it, the seafloor was overflowing lifeforce, which allowed the sea monsters to live very long lives as well as grow insanely strong.
It was a type of holy land.
The situation in the Bone Sea was slowly shifting in the sea monster tide's favor as their numbers quickly soared into the millions without any sign of stopping.
'So that's why it became the Bone Sea…' Leon suddenly realized.
It wasn't just the humans and demons that made up the Bone Sea; most of the bones in the Bone Sea belonged to the sea monsters.
If Leon didn't see the sea monsters devouring each other whole without spitting up the bones, he wouldn't have made sense of how human and demon bones even made up a tenth of the total bones in the Bone Sea.
Nevertheless, the sea monster tide didn't hold the advantage for long.
Once the High-rank Arch Demon and Peak-rank Arch Demon-level sea monsters entered the fray, the battle tipped back in their favor.
It was the most spectacular sea battle Leon had ever witnessed, and he had front row seats to watch it from any perspective he liked.
While such a battle of enormous proportions was taking place in the Bone Sea, the dark wyrms were having the time of their lives fishing for food by the western rivers with Aria and Darlene.
It didn't take long for the dark faes to join them as well.
The sea monster tide posed a certain level of danger with its numbers and strength, but the situation was completely under control—thanks to the four Demon Lord-level dark wyrms overseeing it.
Leon secretly watched the group hoard fresh bodies of the sea monsters they caught and killed while a smaller group prepped them for dinner.
He only needed a single glance to understand that everyone was looking forward to dining in on the sea monsters' flesh later.
"There doesn't seem to be any serious issue with the sea monster tide, no?" Leon said to Nyfarella.
"Er…" Nyfarella scratched her head awkwardly.
"My Lord asked about the sea monster tide last time, so Nyfarella thought my Lord would be interested to know when the sea monster tide arrives…" she explained with an embarrassed look.
"Well, you're not wrong," Leon admitted before saying, "Watching the others catching sea monsters also makes me want to join in on the fun."
He had advanced his cultivation by leaps and bounds, but he had yet to adapt to it; the sea monsters will do well as his practice targets.
"I'll be heading over after I refill the medicine baths," Leon stated before giving a passing glance at Nyfarella's progress.
She was still Rank 1 Body Transformation, but her strength has reached the Mid-rank Greater Demon level.
Nevertheless, Leon quickly refilled the medicine baths' effects before he went on his way to join Aria and Darlene by the river.
"Leon, you're here," Aria quickly noticed Leon's arrival before saying to him, "I thought you'd come to find us sooner."
"My bad. I decided to cultivate a bit more," Leon replied wryly.
At that moment, he still had 30 drops of the Black Turtle Origin Blood, half of what he refined from the Black Turtle Blood Essences he collected.
Although it was only a few dozen drops, they contained tremendous energy within them.
If he hadn't been interrupted, he might have just gone ahead and spent another day tempering his flesh to reach Rank 7 Body Transformation in the flesh-tempering phase.
It was definitely possible with the origin blood of a Half-step God Beast.