Instead of chasing a non-existent collaboration, enjoy their individual works legally:

★★★★☆

Look for legitimate platforms that offer "Free-with-Ads" tiers. This is often the best way to watch high-quality collaborations legally. The Impact on the Industry

If a website promises “free first co-starring work” for these two, it is 99.9% fake. The remaining 0.1% is an amateur indie project not registered in any professional database.

Oishi is not a gravure idol nor a V-Cinema regular. She works primarily in family-friendly or fantasy genres. This stylistic divide—dark/action (Mizuno) vs. magical girl/sentai (Oishi)—makes a crossover highly unlikely.