Sinbound — Full Cultivation Realm System
Before Chapter 4, here's the expanded realm system. This will give Kairo clear progression goals.
The Sinbound Cultivation Realms
These realms are designed to blend cultivation growth with corruption progression, so readers always see Kairo's growth as both power and psychological dominance.
Realm Level
Name (Chinese)
Requirement & Effect
1. Mortal Seed Realm (凡种界)
Fán Zhǒng Jiè
Entry realm upon entering cultivation world. Gain awareness of Sin Energy, basic strength enhancement. Cannot access high-tier sin abilities.
2. Sin Initiate Realm (罪始境)
Zuì Shǐ Jìng
Gain corruption perception. Unlock Desirecraft Lv.1. Absorb minor sin energy. Requires corrupting first soul.
3. Corruption Core Realm (腐核境)
Fǔ Hé Jìng
Unlock Mind Weaving Lv.2. Can dominate weaker sects. Cultivation speed increases. Requires 500 Sin Points and at least 3 harem bonds.
4. Sin Sovereign Realm (罪主境)
Zuì Zhǔ Jìng
Manipulate territory and larger groups. Harem members gain passive loyalty boost. Requires conquest of a sect.
5. Abyssal Sin Realm (深渊罪境)
Shēnyuān Zuì Jìng
Unlock Sin Domination Lv.1 (directly control a target's psyche). Cultivation speed doubles. Requires 2,000 Sin Points and control over a sect.
6. Eternal Sin Realm (永罪境)
Yǒng Zuì Jìng
Immortality through Sin Energy. Unlock full corruption mastery. Sin Points generation becomes infinite. Requires dominating an entire region or sect alliance.
7. Absolute Sin Realm (绝罪境)
Jué Zuì Jìng
Gain Sinbound's "Reality Corruption" — rewrite psychological laws. Must absorb a Sin Sovereign's will.
8. Celestial Sin Realm (天罪境)
Tiān Zuì Jìng
Final realm. Absolute dominance over all sin and corruption. Achieve god-like status. Only one cultivator in history reaches
"The Mortal Seed";
Awakening the Cultivation Path
The Valley of Endless Sins still simmered with crimson haze when Kairo stepped away from the altar. His chest throbbed with new energy — a strange blend of power and sin that vibrated inside him.
The System's voice echoed:
[Corruption Campaign Complete. Cultivation Path Unlocked. Realm Progression Available.]
Kairo smiled faintly. "Finally… cultivation."
Before him, the Eldest monk bowed low. "The rites are complete. Mortal Seed awaits. But beware — cultivation here is different. You do not merely refine energy. You refine sin."
Kairo's smirk widened. "Perfect."
The Eldest guided him to a stone circle in the center of the valley. Ancient runes etched into the ground glowed as they chanted. Crimson light flowed upward from the earth, wrapping around Kairo's body.
The System informed him:
[Cultivation Realm: Mortal Seed Realm unlocked.]
[Ability Unlocked: Sin Perception Lv.1 — sense the corruption level of any target.]
Kairo inhaled deeply. His body felt lighter, yet heavier. Every breath tasted of power and desire.
"This… is the beginning," he murmured.
The Mortal Seed's Trial;
The circle cracked beneath him. The world shifted — the valley transformed into a vast library of mirrors. In each reflection was himself, but different. Some older, some younger. Some triumphant. Others twisted by corruption.
A voice echoed in the void:
"You have the seed. But to cultivate it, you must first understand yourself."
Kairo's grin widened. "Then let's learn."
The System activated:
[Trial of the Mortal Seed Initiated. Requirements: Survive the Mirror of Sins.]
The mirrors pulsed. One by one, Kairo stepped forward into reflections that showed his worst fears — death, betrayal, powerlessness. His heart beat faster. The voice in the void whispered:
"You are not ready."
Kairo drew a breath. His mind hardened. "Then I'll make myself ready."
A crimson thread of sin energy wrapped around his mind, weaving a new resolve. His first cultivation breakthrough exploded —
[Mortal Seed Realm Advancement: Level 1. Sin Energy Mastery Lv.1 unlocked.]
The mirrors shattered, and Kairo opened his eyes to see the valley restored. His strength surged.
"This is just the start," he whispered.
Realm Mechanics Explained;
The System gave him a detailed report:
[Mortal Seed Realm Abilities]:
Sin Perception Lv.1: Sense corruption level of any target.
Sin Energy Absorption: Absorb sin energy from surroundings to cultivate faster.
Desirecraft Lv.1 Enhancement: Emotional manipulation strengthened.
[Next Realm Requirement — Sin Initiate Realm]:
Corrupt 3 more souls.
Accumulate 1,000 Sin Points.
Establish first harem bond stronger than 20%.
Kairo's grin widened. "Easy."
He glanced toward Airi, who knelt beside him, eyes shining with a strange mixture of fear and devotion.
[Harem Bond Strength +12%.]
The System added:
[Harem Bond Expansion Available. Cultivation acceleration enabled with harem members.]
Kairo's voice was low but confident. "This world doesn't just give power… it gives control. And I'm going to take all of it."
The Path Ahead;
The Eldest monk bowed again. "You now walk the cultivation path. Your steps will decide whether you rise or fall. Mortal Seed Realm is only the beginning."
Kairo stepped forward. The valley opened before him, a road lined with obsidian stones and crimson mist.
Behind him, Airi whispered, "Master… where will you go?"
Kairo's lips curled into a confident smirk.
"Everywhere."
Above the valley, the sky cracked in crimson light.
[Next Mission: Corrupt the Cultivators of the Hollow Peak. Corruption Level +15%. Realm Progression: Sin Initiate Realm unlocked upon completion.]
The System's voice was cold and certain:
[Your cultivation path begins now.]