Danbooru-based image board with a specialization in high-quality images.

bondage erect_nipples feet fumi_hiro nymph sora_no_otoshimono stockings thighhighs wings

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is this a software calibration test or a hardware stress test?
hardware stress test more than likely
This should have one of those "X-Ray" things on the side so I can see what's going on.