Buzz!
Just then, a wave of energy rose.
The long sword at Tatsuma's waist emitted a white light and turned into a white-haired girl.
"Tatsuma, good morning."
"Good morning, Est." Tatsuma stroked her head.
Although she usually looked a bit dull, Est was very sensitive in some areas.
After noticing Stella's thoughts yesterday, she didn't join in the party. Instead, she switched to her weapon form and sealed her consciousness, sleeping for a short night.
Taking out a small notebook and a magic pen, Est silently recorded yesterday's events.
[Giving the master to Stella for one night, gained 50 contribution points.]
"Est, do you have a wish?" Tatsuma asked curiously.
Since getting the small notebook yesterday, Est would write something on it no matter what she did. In just one day, her contribution points had accumulated to over five hundred, which was surprisingly fast.
"No wish for now."
Est thought for a moment and added, "Currently, I plan to exchange contribution points for candy and other sweets."
Tatsuma said, "If it's just some sweets, you can eat them freely without contribution points."
Est shook her head. "This has more of a sense of ceremony, and I will have other wishes in the future."
Tatsuma said, "Hmm... That's fine too."
It's always good to have something to do.
Mobilizing Time energy and natural energy, Tatsuma added Eternal and Self-Repair attributes to the notebook. This way, the notebook would not be affected by the passage of time. Even if it was damaged by external forces, it could absorb natural energy from the air to repair itself.
"Wow! Amazing!"
Est's eyes lit up, and a happy smile appeared on her face.
But soon, she seemed to remember something and took out her magic pen again to record on it.
[Upgraded the small notebook, contribution points - 500 points.]
Contribution points were cleared.
Looking at the remaining contribution points, Est put away the notebook and looked at Tatsuma. "Tatsuma, who are we fighting today?"
Tatsuma shook his head. "No fighting today, we are going to the hospital to treat Sairaorg's mother's illness."
Est: OvO
If there's no fighting, it seems I can't earn many contribution points.
...
Underworld, west of Sitri Territory.
A luxurious carriage galloped along a tree-lined road full of natural scenery.
Tatsuma and Est sat at the back of the carriage, and opposite them sat Sona and Rias.
"Tatsuma, how does it feel?" Opening the carriage window, Sona asked with a smile.
"The scenery is better than Rias's side, right?"
"Looking along the way, the scenery and natural resources are indeed richer than Gremory Territory." Tatsuma looked out through the window.
Mountains stretched along both sides of the road, and colorful flowers and trees stood on the land, vibrant and colorful.
"The Sitri clan's territory is one of the territories with a particularly large number of nature reserves among the many upper-class Devils' territories."
"If you have time in a few days, Tatsuma, you can bring Asia and the others over for a trip, visit the scenery and relax."
As the person being compared, Rias didn't pay too much attention to this and instead proactively suggested.
"Travel? Okay." Tatsuma nodded slightly in agreement.
The carriage continued forward, arriving at an area of land that had been artificially leveled. Some buildings were scattered across the land, and there was a large building visible in the distance.
"That's the hospital we're going to." Sona raised her hand to indicate.
"So big." Est blinked and offered her thoughts.
"Aside from the natural scenery, another major feature of Sitri Territory is its extremely comprehensive medical system."
"And the hospital we are heading to now is the largest hospital within the Sitri Territory, and also one of the most famous hospitals in the entire Underworld."
After Sona briefly explained, she pointed to the buildings by the roadside to introduce them.
After continuing forward for another ten-plus minutes, the carriage finally arrived in front of the hospital and stopped at the reception entrance.
"Tatsuma, you've arrived."
Sairaorg was already standing there to welcome them.
After meeting once and getting acquainted, his attitude was much more enthusiastic this time.
After greeting them, he led Tatsuma and the other three to take the elevator to the ward on the upper floor of the hospital.
Pushing open the door and walking in, a simple ward with white as the main color scheme appeared in their sight.
Inside the ward, a woman lay on the hospital bed, who was Sairaorg's mother—Misla.
"Good morning, mother."
A hint of sadness flashed in Sairaorg's eyes, but it quickly returned to calm.
"Tatsuma, I'll leave it to you next."
"Hmm... let me see."
Vast natural energy rose around Tatsuma.
When in doubt, cast Senjutsu.
After upgrading it to the Rainbow level, the effect of Senjutsu was comprehensively improved. More importantly, the natural energy is relatively gentle under normal circumstances and has no side effects.
When encountering something you don't understand, casting Senjutsu is always the right choice.
"Hmm... I see. I roughly understand what the Sleep Disease is."
Within a few seconds, Tatsuma completed the examination through Senjutsu, and nodded.
"How is it? Can it be cured?" Sairaorg immediately asked.
"Of course it can be cured."
Tatsuma equipped [Darwin], and a revolver appeared in his hand.
After examining it with Senjutsu, Tatsuma confirmed one thing. The so-called Sleep Disease is essentially a certain defect in the Devil's bloodline.
It may not be noticeable in ordinary times but after being stimulated by external factors, which in turn generates immense mental pressure, these defects will become the last straw that breaks the camel's back, causing the Devil to suffer from Sleep Disease.
Sleep Disease will continuously suppress the Devil's spirit, which manifests as low spirits and the need to fall into deep sleep to replenish consumption.
However, as time progresses, the suppression brought by Sleep Disease will amplify the defects in the bloodline. And the amplification of bloodline defects, in turn, will further increase the mental pressure brought by Sleep Disease.
In such a repeated cycle, Sleep Disease will gradually erode the Devil's power, causing them to weaken to death in their sleep.
After knowing the principle of this disease, the treatment method becomes clear.
Either find a way to increase the patient's mental strength so that they can resist Sleep Disease and wake up.
Or repair the defects in the bloodline, fundamentally curing Sleep Disease so that it does not recur.
Increasing the patient's mental strength is not a difficult task for Tatsuma, it can be solved by granting a trait.
But if treated this way, it is not fundamentally curing Sleep Disease. After waking up, Misla will still feel mentally exhausted and will spend most of her time sleeping.
Since he promised to help, he must fundamentally cure Sleep Disease so that it does not recur.
Buzz!
The revolver turned into a mass of blood and entered Misla's body.
Misla comes from the original Seventy-Two Pillars, one of the Upper-Class Devils, the House of Vapula.
As a Pure-Blooded Devil, her bloodline level is roughly equivalent to a purple trait, neither high nor low.
Darwin was fully activated, and Misla's bloodline was quickly analyzed.
After that, the energy fluctuations around Tatsuma increased further, activating Almighty to deduce the future.
Using Satan Bloodline as a reference, countless futures of repairing bloodlines appeared before his eyes.
Repair failed, bloodline genes conflicted.
Repair failed, heart burst, died on the spot.
Repair succeeded, small-scale bloodline mutation occurred.
A large number of worldlines where Misla's bloodline was repaired appeared in his eyes, and then Tatsuma skipped over them.
He ignored the cases of failed repairs and compared the few successful cases.
One minute later, the comparison ended.