Office Rivals starts with something stupidly simple: overtime, dead office air, screens burning your eyes, you hating your life but still trying to win that imaginary productivity war. Then Nanako walks in, all sharp tongue and big boobs pressed into that tight shirt, and suddenly Excel is the last thing on your mind. It feels like that coworker you swear you hate, but you remember how she used to laugh with you in college, how you used to check out her chest and then pretend you were noble. Here it hits way harder, because the game does not pretend this is just cute romance. It lets you be horny, petty, jealous and soft at the same time. One moment you are arguing about who closed the deal, next moment her hand is in your pants under the desk, stroking you slow while the monitor light hits her face. It is intimate and kind of mean at the same time, and I love that.
The whole thing is from your POV, so when she leans in, you see her tits fill the screen, buttons straining, just waiting. There is this one scene in a meeting room where she pretends to be all business, glasses on, talking about quarterly numbers, and under the table she guides your hand under her blouse. Fingers push her bra up, you feel the weight of her tits, and when you pinch, she gasps and tries to turn it into a cough. Then the game just goes all in. She is on her knees between your legs, licking the tip, drool sliding down your shaft. They actually animate the teasing, the tongue circling, her eyes looking up like she is saying "yeah, I win, you lose", while she jerks you with both hands. When you finally shove it between her boobs and start fucking those big soft tits, the physics are not perfect, but somehow that makes it hotter. They even give you internal view when you finally bury yourself inside her, watching the head push deep into her, stretching her open, like you are invading this rival you are not supposed to care about anymore. You do. A lot.
What really messed me up is how the game ties all this filth to your choices. You can play it like an idiot who just wants to pump her full of cum and brag in his head, or like some lovesick fool who pretends the creampie is just "stress relief" while clearly wanting to knock her up. There are multiple endings, so that first time you lose control and finish inside, you are not sure if it is just a hot office accident or the start of a pregnancy route. There is this one path where she holds your dick at her entrance, smirking, saying she forgot her pills, and you can either pull out and watch the cum spray on her belly, or push in and keep thrusting until she wraps her legs around you and milks you dry. Later you see her nipples swollen, a bit of lactation starting when you suck hard, and it is such a small detail but it stays in your mind. The voyeur angle shows up too, like when a coworker almost walks in and you are balls deep in her, her hand slapped on the glass to keep from moaning. I was literally alt-tabbing between this and my work Slack, thinking "if Nanako was real, she would absolutely ruin my life, then make me thank her while she rides me again in that stupid office chair." And I would let her, obviously.