Multiverse: Why does the world show a health bar? !

The term "butterfly effect" — Li Mo didn't know its origin, but that didn't stop him from using it. 

A butterfly flapping its wings in South America could trigger a storm over the Pacific. Small changes, after prolonged gestation, could evolve into monumental events. 

Like the tale of a single nail dooming a kingdom. 

His presence had undoubtedly altered much. 

The future of the Kamado family had shifted. The present of the Rengoku household was no exception. 

"Ruka-nee, it's been a while." 

Three years ago, Ruka Rengoku was a woman of imposing dignity, solemn and authoritative as the family matriarch. 

Now, though her bearing remained, she had grown frail. With Tamayo's treatment, her illness was under control, but its toll was undeniable. 

"Yes, it has, Li Mo." 

Ruka's eyes were clear, as if peering into the distant future. In truth, she still steered the Rengoku household. The admirable character of the Rengoku brothers owed much to her. 

"Ruka-nee, Lady Tamayo has entrusted your future checkups to me." 

"I see. She's made her choice, then?" Ruka asked. 

Butterfly Kanae nodded. 

Those close to Tamayo understood her resolve. All respected her decision. 

Li Mo infused Ruka with life force before departing. 

Only after returning did he learn Tamayo had influenced Kanae. 

After confiding in Tamayo, Kanae realized turning demons human was noble but impractical. All remaining demons were now "evil spirits." 

None alive were innocent. 

Nezuko would no longer be the sole exception… Wait—had he forgotten Yushiro? 

Shaking his head, Li Mo exited the room to find Shinjuro Rengoku sipping sake on the veranda, watching his sons spar in the yard. 

"Kyojuro's teaching Senjuro swordsmanship?" 

The Demon Slayer Corps had disbanded. Why train now? Li Mo knew the future belonged to guns and artillery, then information warfare. 

Watching the brothers clash with bamboo swords, he felt speechless. 

Sitting beside Shinjuro, he observed Kyojuro patiently guiding Senjuro—focusing on forms, not Breath Styles. Senjuro lacked the talent for Breathing. 

"Are they… playing?" 

"Mm. Join me in the fields. Dinner's soon—we'll gather vegetables." 

"?" 

Farming wasn't foreign to Li Mo. Raised in a rural past life, he still knew the scent of soil. 

Working the fields with Shinjuro felt natural. Both were clumsily out of practice. 

"After laying down the Nichirin Blade, farming feels awkward," Shinjuro muttered. "With the Corps gone, even trainers are obsolete. What next?" 

This was the confusion haunting all ex-swordsmen. Without demons, their futures blurred. 

*What do I do? What* can *I do?* 

Not all had Kanae and Shinjiro's medical skills or Makomo's place at the Butterfly Mansion. 

"Just… do something. As the Rengoku pillar, find purpose. Ask the Ubuyashikis for guidance if needed." 

"The Master is already swamped securing paths for others. I won't burden him further." 

"So you ask me? Even I don't know," Li Mo shrugged. "Join a factory? The Ubuyashikis must have industrial ties." 

The Corps' vast expenses had long relied on Ubuyashiki wealth. Yet Shinjuro refused to trouble Kagaya. 

Fine… 

They returned with fresh produce. Ruka, revitalized by Li Mo's energy, insisted on cooking. 

After the meal, Ruka sent Kyojuro out with Senjuro. Her plans for her eldest seemed firm. 

Under Ruka's gaze, Shinjuro excused himself. Initially, Ruka questioned Li Mo and Kanae together, then dismissed Li Mo for a private talk. 

Outside, Li Mo endured Shinjuro's probing stare. 

"Eavesdropping, old man?" 

"You were loud." 

"Still eavesdropping." 

Li Mo didn't press it—no need for secrecy. He remained unflappable. 

"I won't lecture your love life… Just protect your kidneys, kid." 

"Drained?" 

"Ruka's regaining her health." 

Li Mo nodded. Tamayo had stabilized Ruka's condition. Now it was about recovery. 

Then… 

Connecting the dots, Li Mo grasped Shinjuro's meaning. He clapped the man's shoulder. "Don't neglect your training." 

"Worry about yourself. *Three*? Bold move." 

"I'm not human, old man." 

Shinjuro faltered. A demon's stamina… was different. 

Sighing, the middle-aged man changed topics. "You're from another world. You'll return, yes?" 

"Yes." 

"Did you… leave others behind there? " 

*Should I add "of the female gender" to that question?* 

Silence answered. Shinjuro read it plainly. 

He simply patted Li Mo, wordless.