Please clarify the exact show name and where you saw it listed. If it’s from a fan site or an adult platform, I cannot provide a guide for accessing it, especially for a “target 15” age group.

It is primarily found on specialized adult anime streaming sites or archives. If you'd like, I can help you find: The full English voice cast list. Other adult OVAs from that era with similar dubbing styles.

It is a single-episode OVA, though some releases or digital versions may split it into parts or include it in adult-oriented collections. The "Target 15 Better" Reference

The adult anime OVA series Cleavage features an official English dub released by Kitty Media in 2009, consisting of two episodes centered on a complex, taboo romance. The dub was produced at DuArt Film & Video and is primarily available through specialized adult-oriented retailers. For more details, visit Dubbing Wikia .

Reviews of Cleavage often describe it as "trashy fun" that doesn't pretend to be "high art". It is noted for: Bright locations and smooth character animation.

The phrase "target 15 better" does not correspond to an official release or a specific technical "v15" patch for the anime. It is likely a reference to: