Balthus: Tia's Radiance

Nestled near Balthus, a sprawling factory city that promises pleasure and prosperity to anyone willing to step inside, sits a peaceful village. The catch — once you're in, you don't really leave. When Eud manages to escape the factory's grip, he winds up recovering in the care of Tia, the sister of a fellow worker he knew inside. It's a rare moment of calm in an otherwise grim setup. But Morlock, the man who runs Balthus, isn't the type to let escaped workers stay free for long — and he's got his eye on Tia too. The story is short, clocking in as a single OVA, and it leans hard into late-80s aesthetics — that rough, dense animation style that fans of the era will recognize immediately. There's a genuine dystopian backbone here, built around exploitation and the cost of chasing false promises, wrapped in the kind of sensual, dark tone you'd expect if you've seen things like La Blue Girl or Bible Black. If Urotsukidōji's blend of dark atmosphere and adult content was your entry point into this corner of classic anime, Balthus covers similar ground but keeps things tighter and more grounded in its industrial, almost steampunk setting. It's not trying to be an epic — it tells its story and gets out. For anyone curious about erotic anime from this specific era, it's a solid window into what the genre looked like before the 90s changed everything.