I've hunted down commissions for all sorts of fan art over the years, so I want to be direct here: because Ochako from 'My Hero Academia' is portrayed as a high-schooler, I won't help find or commission sexualized or explicit material of her. That's both ethically sketchy and a hard line for a lot of artists. That said, if you want mature-style, tasteful, or more grown-up portraits that capture the spirit without sexualizing a minor, there are lots of good, legal paths to take.
If you’re aiming for classy, mature vibes—think dramatic lighting, realistic portraiture, or an alternate universe where the character is clearly an adult—I recommend searching portfolios on Pixiv, DeviantArt, Instagram, and ArtStation. Look for artists who list 'portraits', 'commission open', or 'mature' in their commission sheets. Ko-fi and Patreon are also great for supporting artists directly and often include commission links or tiered requests. When you reach out, be explicit about the style you want (SFW mature vs. adult NSFW), include reference images, ask about rights and print sizes, and respect any explicit no-NSFW policy the artist might have.
If
the goal is adult-themed work, consider commissioning an original character inspired by Ochako’s vibe—same soft aesthetic, different name and outfit—so everyone stays on the right side of the line. I’ve had some of my favorite pieces that way: familiar energy, but legally and ethically clean. Artists will appreciate clarity, payment up front or in milestones, and polite communication. Personally, I prefer investing in artists who set clear boundaries; the results feel better and I enjoy displaying the work without worrying about crossing lines.