KK Library, a filing cabinet for Koikatsu’s chaotic scene folders

Why it surfaced

KK Library turns a very specific folder problem into a proper local library: searchable grids, duplicate detection, author cleanup, metadata inspection, batch edits, and previews. It requires no account or network connection, and even promises to preserve tags, ratings, and authors when files are moved or renamed.

A free, portable Windows app for browsing, tagging, deduplicating, editing, and reorganizing Koikatsu and Koikatsu Sunshine scenes and character cards.