Oshi no Ko Episode 28 "Blind" Preview: Ruby's Dark Turn & Aqua's Investigation

The plot of "Oshi no Ko" Season 3 is heating up, with the story's tone becoming heavier and more realistic. Today (February 2, 2026), the official release unveiled the title for Episode 28 (Season 3, Episode 4) as "Blindness," along with the latest plot summary and preview images. This episode will focus on the dramatic shift in Ruby Hoshino's mindset and the suspicions it raises in her brother, Aqua Hoshino, bringing the tension between the twins to a boiling point.

Episode 28 "Blindness" Plot Summary

In this episode, viewers will witness Ruby completely abandoning her past naivety. In the official preview text, Ruby delivers a heartbreaking line:

"It's impossible. It's impossible to become popular in this world while staying pure and honest."

This line marks Ruby's resolute choice to "make it big" in the ruthless entertainment industry—even if it means using others or telling lies to reach the top. This starkly contrasts with her former image of simply chasing after the shadow of her mother, Ai Hoshino, officially beginning the chapter fans call "Dark Ruby."

On the other hand, Aqua keenly senses something is amiss. Ruby's workload has recently seen an unnatural, rapid increase, and the types of jobs and resources she's receiving seem to exceed her usual channels. Growing suspicious, Aqua decides he can no longer stand idly by and begins to take action regarding the machinations behind his sister's sudden rise.

In-Depth Analysis: Ruby's "Blindness" and Aqua's "Insight"

Ruby's Transformation and Realization

The episode title "Blindness" appears to carry multiple meanings:

• Moral Blindness: Ruby chooses to ignore ethical boundaries for the sake of revenge and fame.
• Blind Idol Worship: Hints at the fans' blind adoration of an idol's lies within the entertainment industry.

Ruby realizes that her dream of being a pure idol alone cannot reach the heights she desires, leading her to choose a more thorny and dark shortcut. This ruthless determination to achieve her goals causes the light to fade from her eyes, replaced by a deep, twin-star gaze.

Aqua's Logic for Action

For Aqua, protecting Ruby was one of his greatest missions after being reborn. However, as Ruby begins to actively wade into the deep waters of the entertainment world, potentially even re-establishing connections with dangerous figures (like Ichigo Saitou), Aqua's protective instincts shift into high alert. In Episode 28, we will see how Aqua utilizes his industry intelligence network to try and uncover who is behind Ruby's sudden, reckless surge.

The Twins' Conflicting Relationship

This episode is also a pivotal turning point in the twins' relationship within the "Oshi no Ko" story. The siblings, who once supported each other, begin to walk down distinctly different paths due to their hidden motives and differing understandings of "lies." Ruby's radicalism and Aqua's calculated depth will have their initial clash in this episode.

Conclusion

Episode 28, "Blindness," is not only a crucial turning point in Ruby's character growth (or corruption) but also sets the stage for even more gut-wrenching developments to come. Just how far is Ruby willing to go to become famous? And can Aqua stop her before everything spirals out of control? Be sure to tune in this week.