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.

Whole thing plays in my head like a burlesque routine I never got to put on stage. Fate girls, but not the polite kind you show to your vanilla friends from Reddit. This feels more like the back room after the show when the corsets are half open and everyone is a little too drunk on their own tits. It takes that Fate vibe and just squeezes it, literally, like the dev asked “what if the Holy Grail was actually a pair of gigantic boobs wrapped around your cock” and never walked that idea back. Plot is basically “Master, you like my breasts?” and honestly that is already a stronger motivation than half the visual novels on Nutaku. You land in scenes where the tits arrive first, character names second. Saber-looking girl with armor that exists only from the waist down, a Caster type who clearly spent all her mana on cup size, and I swear one of them has a breast window so deep I could fall face first and disappear for a weekend.

The vibe is slow, sticky, focused. There is this one scene I still keep replaying in my head: you are sitting there, cock already out like the game just assumes your pants did not survive the title screen, and she leans in with this smug “I know exactly what I am doing” face. No rushing to penetration, just her wrapping those huge soft things around you, adjusting her grip like a dancer finding the right balance on stage. The little slide of skin-on-skin, the way her fingers squeeze from the sides so the nipples kiss along the shaft with each stroke, that tiny detail killed me more than any cumshot CG. And the facial close up when she feels your cock twitch between her boobs, this mix of pride and hunger? Yeah, I choreographed a whole fan dance in my head around that, slow circles of feathers following the rhythm of her tits pumping. The game pretends to be parody but sometimes it feels more honest than the source, like “forget saving humanity, this is the real contract.”

It is funny because nothing super complex happens. Mostly tits and cock and that’s it. No harem chaos, no map hopping, no stupid grind. Just a focused worship of massive breasts and the poor bastard pinned between them. Scenes hit hard, even when the animation is stiff or the loop feels a bit cheap. Like, I complained in my mind about the way her hair clips into her chest, then two seconds later I am groaning because the next frame lines your tip perfectly with her cleavage and my brain just shuts up. Some transitions are awkward, like the cumshot comes a bit too early or the camera jumps, but it almost feels right, like sex where you miss the beat and both laugh, then keep going. It is Fate, but only the parts every fan secretly wanted: the girls turning that big cock into their personal Holy Grail ritual. Dare to pretend you clicked it “just for the parody” and not because those big tits had your name written all over them.

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.

Our protagonist lived a simple, ordinary life until a horrific incident in the subway changed everything about his existence forever. But it didn’t stop at his life; it changed him inside and out! On a chemical level deep within his body, forcing unsettling transformations. Now, the question is whether he will discover a cure or come to accept this new identity. Dive into the story, make your choices, and watch what unfolds

Life before that day was normal, marked by routine and comfort, until the chaos erupted below the city streets. What happened left scars on the surface but also twisted his very DNA, rewriting who he was.

Mutations unfolded in raw and primal ways - his senses heightened beyond human limits, his flesh warping in strange patterns, muscles rippling with newfound power.

Isolation crept in as he struggled to hold onto his humanity amidst the monstrous changes.

This story forces you to decide - will you scour hidden corners of the city for a reversal or surrender to the beast growing inside?

Beyond action, it’s a psychological odyssey where the lines between human and monster blur under your command.

Take control now and see if you have what it takes to save him, or let him sink into the abyss.