A husband, a stupid fight, and that sick feeling in your gut when you suddenly notice how short your own shadow looks next to another guy’s. That is basically where this story sits, grinning at you. You follow this poor bastard of a husband who starts the evening thinking he is “the man of the house” and ends up wondering if his wife is getting her pussy filled by somebody taller, thicker, and a lot more confident. The game plays like a teasing lecture about NTR, but not in a cold way. It is like a drunk friend whispering in your ear, “You see that guy talking to your wife? Yeah, that is how it starts.” The visuals sell that uneasy vibe: soft, slow camera-like cuts, those slightly too-long pauses on her lips when she smiles at someone else, her shirt clinging in all the right places, and his eyes squinting like he is trying not to imagine her on her knees, drool on another man’s shaft. The pace is not rushed, it pokes you. You get moments where almost nothing “big” happens, just small looks, off-hand comments, her phone lighting up with a message while she is in the shower and you are left staring at the screen, imagining every filthy word she might be reading.

There is a strong “PSA from hell” vibe, yeah, like some horny officer in a police comedy explaining step by step how your wife goes from “I would never cheat” to getting her ass slapped by a stranger in some cheap hotel on vacation. The husband is technically the male protagonist, but it never really feels like you are in control. You are more like a ghost stuck in his skull, dragged through his jealousy, his twisted fantasies, his humiliation. One scene that hit hard: he is sitting on the bed, replaying his argument with his wife, and his brain starts playing its own porn parody. Suddenly she is there in his mind, bent over the kitchen counter, big tits pressed on the cold surface, some smug bastard gripping her hips while she moans his name instead. The sounds get louder than his own thoughts. Little sticky lip noises, wet slaps, her breathy “harder” that he is not sure she ever said to him in real life. The game leans into that: you never know where reality stops and his corrupted imagination starts. Sometimes you see Sara in normal everyday clothes, then next transition she is in a tight uniform, unbuttoned just enough, or a cheap lingerie set that looks like it was bought for someone else’s eyes. You get flashes of oral, her cheeks hollowed around a thick cock, but it cuts away too soon, almost mocking you. And in the middle of all this, the tone suddenly slides into this weird humor, like a wink to those who know Konosuba jokes and tentacle memes, like the narrator is some half-drunk wiz giving you “NTR survival tips” while the real lesson is just: if you feel it happening, it probably started a long time ago, back when you ignored how she smiled at her “friend” a little too much. The game never holds your hand. It kind of laughs while you squirm.

Mythos feels like somebody smashed together a late night crime podcast, a horny anime parody and that weird urban legend subreddit you scroll on your phone when you should be sleeping, then sprinkled way too many tits on top and said “yeah, this is fine”. You pick if you’re playing as a guy or a girl right at the start, and it actually matters, not just in “pronoun changed, congrats” way. Some scenes twist a bit depending on your body, who stares at you, who you can seduce, whose hand “accidentally” lands on your ass in the train when the lights flicker and the supernatural stuff leaks through. There is this first big moment where you’re at Lisa’s memorial, staring at a photo of your ex who got murdered in some fucked up way nobody wants to explain, and two completely different types of people hit on you almost at the same time: a smug cop with that “I’m totally abusing my badge” vibe, and this soft spoken girl with huge tits spilling out of a tight uniform that should absolutely not be legal in a public place. The game doesn’t stop to tell you “this is a choice”. It just lets you go horny detective or horny victim or both and quietly tracks who you want to bend you over later.

Sex is not just “reward unlocked, here’s generic bouncing”. You’re running around this fake-modern city where vampires are landlords, tentacle things hang out in dark alleys like drunk ninjas and one busty elf professor keeps “tutoring” you after class, squeezing your thigh while talking about mythology like she isn’t about to slide under the desk and wrap her lips around you. There is a scene at a cheap business hotel during a “vacation” that is not really a vacation. You’re supposed to investigate, but instead you spend half the night pinned against the balcony railing by a frustrated MILF who is technically someone’s wife and technically not human and technically doesn’t give a fuck. She rides you slow while the neon signs below blink and you can choose if you pull out or let her take every drop and feel that messy creampie drip down her inner thighs while she laughs and calls you a good little snack. Later the same day, basically in the same clothes, the story casually throws you into this awful netorare-ish angle where you watch through a half open door as a different woman you got close to is getting pounded by some supernatural asshole with a cock way bigger than yours. The game lets you peek, or walk away, or join and turn it into harem chaos. If you stay hidden, you see her begging for more, getting titfucked until her face is glazed and you can’t decide if you hate her, hate yourself, or just want in. And that mood, that messy mix of comedy, jealousy, horror and “fuck it, let’s suck his balls too”, that’s pretty much Mythos all the way through, jumping between murder clues, meme jokes, romance sweetness, corruption temptations and stupidly hot tentacle scenes in the dark where you swear you’re still solving a case while something slimy is filling your ass and your mouth at the same time.

Warm sand, lazy waves and that sticky summer heat that makes clothes feel too tight, that is the mood here. On the surface it is just this couple trip, Satoshi and Mary doing the cute romance thing, like some basic visual novel dating stuff, but the whole resort smells like sex and trouble from the first scene. As an ASMR brain I got weirdly fixated on tiny things: the sound of the elevator doors closing while Mary is still breathing a bit fast from being teased, the faint splash from the pool while uncle Kendo’s hand stays just a little too long on her back, the soft clothing rustle from those uniforms she really should not be wearing around her boyfriend’s uncle. The game loves that slow teasing, the “oops I brushed against your cock” kind of groping in crowded places, or that nasty little thrill when you peek around a corner and see way more than you should. It is not screaming moans all the time, more like whispered gasps in his office, tongue sounds during a half-hidden blowjob behind some plants, the wet slide during a lazy titfuck while the fan hums in the background. Those small sound loops are not even high quality sometimes, they repeat a bit awkward, but somehow that makes it feel more pervy, like you are stuck rewatching the same dirty moment in your head.

Story keeps pretending it is about romance, vacation, cute couples selfies and all that, then casually throws NTR in your face like “oh by the way, your girl is sitting on someone else’s lap now”. Mary starts the game as this sweet college girlfriend, normal student clothes, clingy but pure, then Kendo slowly corrupts her with flirty jokes, accidental skinship, then actual handjob routines and hidden sex scenes that only unlock if you picked the more cowardly, negligent choices as Satoshi. Those hurt in a delicious way. Watching her big tits pressed up against that older guy while she still texts her husband-to-be like nothing is wrong, that gave me this nasty ear-tingle similar to when someone whispers right into your earphone on TikTok lives. Some scenes really go for it: lazy oral sex in the office chair while the door is unlocked, creamy vaginal creampies where you can almost hear the thick squelch when he pulls out, her uniform pushed up, panties hanging at one ankle. There is one bathroom scene where the only sound for a few seconds is water dripping and her shaky breathing while his fingers work between her thighs, and that silence before she lets out a tiny whine is so much hotter than the actual animated thrusting that comes after.

Sometimes the humor hits at weird times, like during a pretty brutal cheating-wife moment the game throws in a goofy Konosuba parody reference with Aqua-level stupidity and a Megumin joke that almost killed the mood for me. Then right after, Mary is getting pounded from behind on the balcony, tits bouncing, Kendo grabbing her big ass with both hands, and I forgot I was annoyed. The tone is messy like that. One route had me listening to a police siren in the distance while a stepmom-looking milf with huge breasts lets herself get groped in a hallway, and my brain was like, why is that siren loop so loud compared to her moans. It never gets fixed. The multiple-protagonist thing is sneaky too: you think you are just Satoshi, then you slip into Kendo’s head for a bit and suddenly the same scene feels nastier, more direct, his inner monologue about Mary’s soft thighs and how easy it is to corrupt a bored young wife on vacation. There is family tension, step fantasy vibes, straight-up netorare where your “good boy” choices just make you more pathetic while she learns to love big cock and risky public groping. It is not subtle, not polished, sometimes the animated loops look a little stiff, but that actually fits this dirty-resort energy. Like a summer fuck that got way out of control and left you sweaty, frustrated, and still replaying her breathy little “don’t tell him” in your head when you close the tab.

This one is basically a horny little confession letter wrapped in a visual novel, written by someone who definitely has a redhead fetish and probably too many secret folders in their browser. You play the curious stepbrother, walking around the house thinking she is just your hot, moody stepsis with huge tits and attitude, while she is quietly wrestling with the fact that her “secret” is not some cute tattoo but a thick futa cock she is hiding under those shorts. The whole tone is “I shouldn’t want this but I absolutely do,” and the game milks that for every awkward look, every too-long stare, every “accidental” touch. It starts almost wholesome and then veers straight into “oh shit, we are really doing this” territory once his curiosity turns from “why is she so distant” into “why is she blushing when I sit too close and why the hell is something bulging under her skirt.”

What I liked is that her futa side is not treated like a cheap punchline. She is insecure, kind of prickly, and uses humor as armor. The script actually leans into that. She cracks dirty jokes, roasts you for being a horny idiot, then immediately goes shy when you compliment her. One scene where the MC walks in on her half dressed and she is desperately trying to hide her cock using a pillow had me snort-laughing, not because of clown humor, but because it was exactly that kind of “I am doomed” panic. And then, when the cat is out of the bag and he realizes his stepsister is packing something bigger than his ego, the vibe flips from teasing to heavy domination really fast. There is a point where she pins him to the bed, her tits in his face, cock throbbing against his stomach, genuinely asking “you sure you want this?” even though the answer is obvious from the way he is already leaking. The game goes full futa on male, no coy fade to black, with long CG shots that linger on penetration, precum threads, messy faces. It is explicit without pretending to be classy. Also, whoever drew the veins on her shaft was clearly very proud of them. She uses that thing like it owes her money.

The humor sticks around even during the dirty bits, which helps a lot. She keeps calling him “pervy little stepbro” while choking him with her cock, which should not be as hot as it is. The step fantasy is leaned on hard but played with a wink, like the game knows you have been on Pornhub and is just giving you the upgraded VN version. Some choices are basically “do you want to be a brat and get dominated harder, or be obedient and get rewarded with her using your mouth like an onahole,” and both routes end with your ass getting claimed anyway. The writing occasionally trips over its own English in a way that made me think of old fan translations on Fakku, but honestly it kind of fits the trashy charm. It is not trying to be deep, it just wants to show you a busty, sarcastic redhead stepsister with a massive dick absolutely wrecking the guy who thought he was the one doing the seducing. You open it in one tab, forget your other apps exist, and suddenly your keyboard needs a wipe.