The "ハダカパッチ" is "Hadaka 4koma (Nekoneko software's SD 4koma Manga) patch".
Your image's Japanese caption says "× General Hadaka Patch (Other Makers' Naked Character patch), ○ Our Company's Hadaka patch (Our Hadaka SD 4koma Manga patch)".
Conclusion: It is intended work. No naked characters patch.