Manipulation works…until it doesn’t
As a fan of Demon Slayer I wanted to do a post about one of my favorite characters, Rengoku.
When building products and features Rengoku is transparency and Akaza is manipulation.
Every design choice we make either builds trust or breaks it.
Which path are you designing for? ❄️ 🔥
In the world of product design, the contrast between transparency and manipulation is strikingly analogous to the characters Rengoku and Akaza from Demon Slayer. Rengoku symbolizes clarity, honesty, and trust — qualities that translate into design elements like transparent pricing, straightforward onboarding, and honest calls-to-action (CTAs). These practices empower users by providing clear information about what they commit to, fostering confidence and long-term engagement. On the other hand, Akaza represents deception and trickery, which in product design can be seen in dark patterns such as hidden fees, guilt-tripping popups, and confusing user flows. While such tactics might drive short-term conversions, they destroy trust and ultimately damage brand reputation. Users remember their experience emotionally; they are much more likely to become loyal advocates when treated with honesty and respect. Effective design hinges on minimizing friction and enhancing clarity. For example, a transparent cancelation flow ensures users feel in control, while clearly distinguishing free versus paid features helps set expectations rightly. Regular reminders about subscription status or usage streaks, presented clearly, maintain openness and lead to better retention. As digital products continue to evolve, the battle between these design philosophies intensifies. Choosing transparency doesn't just improve immediate user satisfaction—it builds an enduring relationship that drives advocacy and sustained growth. This approach aligns with Google's SEO quality guidelines emphasizing E-A-T (Expertise, Authoritativeness, Trustworthiness), reflecting honesty and quality in content and design. Ultimately, designers must ask themselves: which path will my design follow? Will it be the fire of trust like Rengoku’s, lighting the way to meaningful connections? Or the shadows of deception like Akaza’s, leading to fleeting wins but long-term losses? Making conscious, user-centered decisions in every design choice is vital for creating products that users not only use but also believe in and recommend.









