Monster Tamer World

You finally decide on a saucy idea: games like Pokémon are fun to you, but you don't care so much about gameplay. It's about the world and finding every different creature in it. Imagining catching a harem of hot monsters got appealing as you grew up. So when you stumble upon a smutty Monster Taming fantasy world, you instantly decide on it.

In the free-use man-only World of Verdantia, virile spirits of nature take the form of masculine, magical, anthropomorphic plants and/or animals (either full-furry or human-chimera.) They can communicate and cohabitate-as well as fornicate-with humans (though they only repeat their common species name as speech.) However, without human intervention, they remain wild and fight for dominance via sexual combat (which won't hurt humans who lose, but they do rob you for no good reason.) Humans learned that they can tame them and use magic stones to house them in and summon them from a personal pocket habitat (known as a Habiket.)

While combat with assistance from any of your tamed monsters, an easier option for the lower-level (dumber) ones is to play into a kink they can't resist or trick them with their own lewd, idiotic logic. Many are very gullible and will obey what others say if it sounds like it conforms to their worldview (believing they are an Alpha, only looking out for themselves, shy attitude, etc.) Mid-to-High-level monsters require combat, but doing those techniques will definitely soften them up. They may even work on humans.

Human culture, alongside being free-use, in centralized around monster taming. Most men will gladly engage in a battle for fun or bet money on it if asked. Many professions allow them to include their Tames (as they are colloquially called) in their work; it's largely for sexual relief, but all monsters have their own magical abilities that can help. Many sex-battle leagues, both professional and recreational, have started with the backing of major media and tech companies, like those that sell Habikets.

It's a common tradition and encouraged with government stipends that you take at least one year off to go adventuring as a Tamer, recording combat with monsters for research purposes and selling erotic video. In fact, in each nation there is a system of Clubs (a combination of a training gym, a bar with a dance floor, and a bathhouse with private [or public] rooms) that are manned by some of the best tamers in the world. If you challenge the Club Leader and defeat him and his Tames, you get a commemorative token for it. When you beat at least five Clubs and get their tokens, you can either be given entry to The Fucking League to challenge The Ultimate Three Tamers, or wait until the annual Fucking League Orgy-Bowl to compete against other qualifiers on live-television.

The most respected and coveted position in this world is being a Monster Researcher. Since they are always discovering new monsters, governments catalogue them in a personal portable database where a Tamer can learn more about ones they don't know of and collect sightings of unknown species. The Researchers have the duty to compile the data into the network, and the pleasure of "testing and examining" the monsters sent to their lab. They are less so considered for their academic qualifications, but more for their sluttiness and versatility.

The most common way to start an adventure if you have no monsters is to visit a local Researcher, and get a low-level monster. It may not be the best at 1v1 sex (especially against a magic-type it's weak to), but they are some of the few that evolve into stronger, sexier beasts. You typically have a choice between three types that all counteract each other (so if you show up at the same time as someone, they'll become an annoying, hard-to-beat rival.)

There are rumors of a conspiracy led by a criminal organization of monster thieves, stealing people's Habiket stones. The mysterious leader sends out teams of these craven burglars with augmented monsters, including one with a talking catman. It's not hard to beat them, but they tend to be total vibe-killers mid-sex combat.

"Alright, I've made my decision," you tell the Goddess.

"That's wonderful. I shall now prepare to send you."

She then manifested a futuristic door with natural colors to its plating and lights.

"I just want to thank you for giving me this chan-"

"You don't need to. I am not a god who rules and requires worship. I wish to serve humans because your acknowledgement is all I need to survive. Go on and live your best life."

With her reassurance, you walk through the door to a new world...

(This world has the Biology worldbuilding from My Own Gay Sex World, where men are born as adults from trees. Monsters will, however, just appear out of thin air and start existing like they were always there.)

(All possible kinks: Furry, Monsters, Anthro, Free Use, Consensual Sex Slaves, Claiming/Training, Magic Sex, Sex Combat, Pet Play, Dumb/Himbo, BDSM, Power Dynamics, Role Reversal, Unaware, Gullibility, Teasing, Humiliation, Cuckolding)