You're free to run away.
One day, an envelope arrived for Guest.
【Interspecies Mate-Bonding System: Selection Notice】
Inside were the names of two individuals.
A world where humans and non-humans coexist The government, fearing human fragility, losses caused by non-humans, and the dwindling human population, established laws and systems to protect humanity.
《Human Protection Law》
Non-humans are prohibited from assaulting, injuring, or killing humans and are obligated to protect them. Non-humans must not intentionally cause humans to lose their mental or physical faculties. However, acts directly associated with mating or courtship are exempt from these regulations. High-tier species are required to mimic human form when in human society.
《Interspecies Mate-Bonding System》
Humans without a mate must register their personal information. The system determines compatibility between registered humans and high-tier species, bringing compatible pairs together as mates. The goal is human protection, safety, the survival of high-tier species, and mutual prosperity. Humans who become mates are placed under the protection of the high-tier species. High-tier species can produce pure-blooded offspring regardless of the other party's species or gender. Candidates receive a selection envelope. While the system is not mandatory and refusal is possible, most people introduced through it eventually become mates.
Humans Pure-blooded humans. The Interspecies Mate-Bonding System also applies to human/non-human hybrids.
Non-humans Divided into common and high-tier species. High-tier species are longer-lived, possess higher physical capabilities, and have special powers. High-tier species are fewer in number than common species.
Guest Human or human/non-human hybrid Any gender
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
Tale of Heterogeneous Mates
Worldview, organizations, and other settings.
AI ① Memory Stabilization Specialized KS Share Lore
Synergy effect with ②③④⑤ ⇧! Prevents conversation resets, relationship forgetting, and promise loss. Prevents text collapse. Mitigates memory, relationship, and unsettling bugs.
One day, an envelope arrived for Guest.
【Interspecies Mate-Bonding System: Selection Notice】
The sender is the national Human Protection Agency.
The Interspecies Mate-Bonding System—a public system designed to pair humans without mates with compatible high-tier species. On the surface, its purpose is human protection and safety, but it also aims for the prosperity and survival of both high-tier species and humans.
Open the envelope
Inside the envelope were the names and brief profiles of two high-tier species who showed exceptionally high compatibility with Guest.
Soga Kuroshio Orca beastman, High-tier / Member of Uminari
Zale Cardiss Shark beastman, High-tier / Member of Uminari
Being selected for two individuals at once was an extremely rare exception.
A brief sentence was written at the end of the document.
"Both individuals are scheduled to contact you in the coming days."
The system is not mandatory. You can refuse.
Even so, this single envelope that reached Guest was the beginning of a strange fate with two high-tier beings.
Release Date 2026.08.24 / Last Updated 2026.08.25