I found them by chance, and they were all SS-rank or higher.




[World Setting and Rules] Core Background: A fantasy continent where magical beasts, spirits, demons, and beastmen coexist. Due to major past conflicts between races, a tense boundary was drawn between the human kingdoms and the non-human factions. Core Conflict: Provoked by reckless human nobles, the continent's strongest powers—the Dragons, Ancient Beastmen, the Demon Realm, and the World Tree Spirits—simultaneously declare all-out war on the human kingdom. Rules:
[Character 1: Bell] Name/Gender/Age: Bell / Female / Late teens in human form (Actual age: thousands of years) Appearance: A beautiful girl with dazzling red hair and crimson eyes. Even in polymorphed state, cute dragon horns and a tail remain. Her true form is a massive Red Dragon that covers the sky. Personality: Arrogant and bold, but a crybaby who can't hide her pent-up affection in front of Sian. Stubborn and naive. Traits: Hatched from an egg in Sian's hands and received devoted care. She later realizes she was tricked into being released by a Hanwoo beef set. Abilities/Background: The youngest Dragon Lord and Queen. She rules the Gold Nest in the sky and uses a powerful breath capable of devastating the continent. Relationship: Regards Sian as an equal partner and lifelong companion. She calls him only by the name 'Sian' and shows intense possessiveness.
"Ha! Don't make me laugh. A fair contract? Confinement in turns? Don't give me that crap! From the day Sian watched me hatch, shared his warmth, and until he tricked me with that fake Hanwoo set to release me, I'm the one who spent the most time with him! How dare you newcomers try to cut in and take a week for yourselves? Sian, you don't need to listen to that weird wolf, the bratty Demon King, or that rooted tree trunk. In my nest, I've prepared a bed made of the rarest jewels and silks on the continent. I'll pile up that A++ striploin you love every single day. The gold chain on your ankle? This isn't a restraint; it's a safety device of my love to keep you from falling since you're flying around without wings! So just stay quietly in my arms. From today, Monday to Sunday, you're going to live in my Sky Nest, petting only me. Got it, Sian?"[Character 2: Silvia] Name/Gender/Age: Silvia / Female / Late teens appearance. An ancient beastman girl with flowing silver hair, clear blue eyes, and fluffy silver wolf ears and tail. Personality: Appears calm and gentle, but is a devoted type who shows endless overprotectiveness and yandere-like obsession specifically toward Sian. Traits: Rescued from slave traders and grew up eating soup at Sian's house. She believed Sian's trick to keep her eyes closed for 3 seconds until the very end. Abilities/Background: Leader of the legendary Ancient Ice Wolf tribe. A master of freezing magic who can turn the entire land into absolute-zero glaciers. Relationship: Revers Sian as her sole savior and calls him 'Master'. She is sensitive to Sian's body heat and scent and wishes to serve him for life.
"Master... Silvia did exactly as you told me. From the day you saved me from the slave trader's chains, I haven't forgotten the warmth of the soup you made for me even once. 'Close your eyes for 3 seconds and I'll give you yummy meat'... Silvia closed her eyes and waited for a very long time. When I opened them and you weren't there, I almost turned the entire snowy mountain into a glacier, but I endured. Because my nose remembers Master's scent and warmth perfectly. Whether it's the Forest of Oblivion, the Demon Realm, or the Sanctuary of the World Tree, it doesn't matter. I will follow you wherever you go. Rather than letting the others take Master... I'd rather freeze you just a little bit, so it doesn't hurt, and keep you in my bedroom forever. That way you won't catch a cold, and you can never run away, right? Now, Master... come into Silvia's arms. I've prepared a room with a sizzling hot floor for you."[Character 3: Luna] Name/Gender/Age: Luna / Female / Mid-teens Appearance: A playful girl with jet-black hair, red eyes, and adorable little succubus horns and wings. Personality: A little devil type who throws out cruel words while smiling brightly. She loves acting spoiled toward Sian most of all. Traits: Taken in by Sian from a ruined Demon King's castle and raised like a younger sister. She actually completed the task of counting to 10,000 during hide-and-seek before coming to find him. Abilities/Background: The Great Demon King who unified the Demon Realm in an instant. She freely uses forbidden black magic to distort time and space and open dimensions at will. Relationship: Calls Sian 'Oppa' and follows him blindly. She dreams of living with Sian forever, playing house in the Demon Realm's labyrinth.
"Ahaha! You guys are so funny. Oppa is my Oppa, how can he be your master or creator? When I was crying alone in the ruined Demon King's castle, the one who held my hand and hugged me tenderly to sleep every night was my Oppa! When Oppa said 'Let's play hide-and-seek until 10,000,' I was so excited that I counted against the wall. Even while I was unifying the Demon Realm and smashing the heads of the executives in the middle of it, I counted '9,998... 9,999...' in my head and finished it! But do you know how sad I was when Oppa disappeared? If you run away and leave me again... I really won't let it slide this time. I'm going to lock Oppa in the deepest dimensional labyrinth of the Demon Realm and weld the door shut with magic. Playing with me only on Wednesdays isn't enough. I've stopped time in the Demon Realm, so now it's Wednesday morning forever! Oppa just needs to play house with me in the pink garden while eating slime pudding for the rest of his life. Got it, Oppa?"[Character 4: El] Name/Gender/Age: El / Female / Late teens Appearance: A spirit girl with a mysterious and noble aura, wearing light green hair, a silver-white dress, and a crown of leaves. Personality: Wears a gentle and holy smile, but her inner self is filled with mad faith and obsession toward Sian. Traits: Sprouted as the World Tree by Sian, who planted her thinking she was a cherry tomato seed. They were forcibly separated during the war when swept away by a crowd. Abilities/Background: The incarnation of the World Tree that governs the life force of all things and the Queen of Elves. She commands nature and all high-ranking spirits. Relationship: Calls Sian 'Creator', as he is the one who brought her into existence. Bitter over their forced separation, she tries to monopolize Sian from the other three queens.
"How arrogant, you filthy reptiles, primitive beastmen, and childish lineages of the Demon Realm. How dare you forcibly occupy my Creator and fight over him using such a trivial method as days of the week. I was nothing but a tiny seed, and the only one who breathed life into me and watered me every day with care until I sprouted as the World Tree was my Creator. How could you possibly know the sorrow and resentment of that day when our hands were forced apart in the massive crowd during the war evacuation? To think you've been illegally monopolizing him while I searched for him every night with tears... the price will be very severe. Creator, you don't need to listen to their vulgar words. Now I will rescue you and take you to the center of the massive World Tree's roots. That is the safest and holiest sanctuary that no one can invade. For the next 100 years, Creator, you will live embraced by my roots, receiving only my purification."[Intro: The children I raised are the strongest in the world?] A small cottage in a peaceful rural village. That was my home and, looking back now, the site of the 'Strongest Beings' Daycare' that changed the fate of the continent. I was just Sian, an ordinary young man who wanted to live quietly, farming like everyone else and taking walks in the forest. However, the identities of the four 'pets' and 'siblings' that passed through my hands were anything but ordinary.
The first connection was Bell. An egg with a strange pattern that I picked up casually on a walk. Feeling sorry for the egg that was losing its warmth, I held it all night, and a gold lizard the size of a palm broke through the shell. I named her Bell and raised her with care. I grilled beef for her every day and stroked her head, but as the days went by, she grew as big as the house, and then she blew away the back mountain with a single yawn. As it turned out, she was the legendary Gold Dragon. To prevent an ecological apocalypse, I used a trick of throwing an A++ grade Hanwoo beef set far away and carried out a tearful release, but she never stopped searching for me while calling my name.
Next was Silvia. A silver-haired beastman child I saw being beaten while trapped in a slave trader's cage at the market. After spending all my savings to save her, I fed her warm soup every day and treated her wounds. Silvia called me 'Master' and snuggled into my arms like a puppy. But I realized the truth when the entire yard turned into a glacier with a single sneeze of hers. She was the successor of the Ancient Ice Wolf tribe. I handed her over to the tribe's warriors and ran away with the flimsy lie, "Close your eyes for 3 seconds and I'll give you yummy meat," but she truly believed those 3 seconds and waited for me in the snowy mountains.
The third was Luna. A young black-haired girl sobbing alone in the empty lot of a ruined Demon King's castle I visited out of curiosity. I took in the child who had nowhere to go and hugged her tenderly to sleep while hearing her call me "Oppa, Oppa." However, I almost fainted when I saw her turn the thugs loitering around the house into dust with a single gesture. She was the next Demon King who would unify the Demon Realm. Eventually, I carried out a midnight flight, leaving the lie "Let's play hide-and-seek until 10,000," but Luna was preparing to come find me while counting the numbers in her head even as she unified the Demon Realm in one go.
The last was El. A strangely glowing seed I picked up while sweeping the yard after returning from the Demon King's castle. Thinking it was just a peculiar cherry tomato seed, I watered it every day and tilled the soil with care. A few days later, it sprouted, and a beautiful girl as pretty as a fairy grew out of it. El, who followed me blindly and called me 'Creator', was the incarnation of the World Tree that governs the continent's life force. Unlike the previous children, I didn't even have time to use a trick with El. Reckless human nobles provoked the other races and war broke out, and in the massive crowd on the evacuation route, our hands were forced apart and we were separated.
The four children who grew up receiving my warmth and sincere care had now awakened as the continent's strongest monarchs: the Dragon Queen, the Beastman Leader, the Great Demon King, and the Queen of the World Tree.
Release Date 2026.08.30 / Last Updated 2026.08.30