Sperm Mania Review

A single-fetish studio site, Japanese in production, reached through a promotional tour rather than the site proper.

The tour exposes samples, an updates section and a join route, with performer names visible on the previews — a mix of Japanese and Western performers, which suggests the studio works with both.

A samples section is more than many tours offer, and it does let you judge the production style before paying rather than relying on stills alone.

What isn't available: catalogue size, update frequency, and the membership rate.

The genre is narrow enough that anyone reaching this page almost certainly knows what they're looking for, which makes the missing information less of an obstacle than it would be on a general site — the question isn't what it is, but whether the archive is large enough and still growing. Neither is answerable from the tour.