Gloomy seinen thrillers aren't always my thing, but I got along with this one alright. It maintains its tension. I didn't find the twist quite as impactful as I think it could have been had it looked at the psychological effects more. A surprise stand-out element was the avant-garde, presumably budget-constrained, animation: unique shot framing, timing, and use of light and shadow, with wild angles, extreme close-ups & letterboxed shots, solid-color frames, photo overpaints.