Hikari remains not-my-favorite Sakurada, but her half of the episode benefits not only from Sacchy, who has some hot takes on royalty (they don’t understand true hardship; they’re set for life no matter what), unaware her fellow idol is in fact a princess. Akane is also cleverly brought into the storyline, since she’s such a huge Sacchy fan and is (slightly) aged up by Hikari to serve as a substitute assistant. Then Sacchy learns the truth—accidentally, creating fresh tension.
Hikari’s manager wants her to reveal her true identity after the next joint concert with Sacchy, but Hikari decides not to do so. Now, in the past, this might seem like backtracking on the original plan to increase her exposure to the voters through idolling. But she feels to do so now would be unfair to “Raito”, and more importantly Sacchy and her fans. Still, she wants to tell Sacchy the truth before they take the stage, and she does.
Sacchy doesn’t care which identity Hikari chooses; she knows she’s a hard worker and someone she wants to keep performing with. Akane is inspired to see how much her little sis has grown, and a little envious she knows what she wants to do (outside of becoming king) and is going for it with everything she’s got.
The second half is arguably a far simpler story, focusing on the twin siblings Shuu and Kanade. Just as the first half was a callback to a previous Hikari-Sacchy segment, the second is a callback to Kanade’s feelings of grief, regret, and idebtedness for injuring her brother by recklessly using her powers as a youth. When she sees him on the street with his girlfriend, she re-resolves to become king so she can heal his legs.
Then, all of a sudden Shuu teleports before her, knows she’s troubled by something (they are twins after all) and tells her…he doesn’t want her to become kind just to heal his legs. He’s happy with his life, and Kanade doesn’t own him anything. Kanade’s personality is much like her power: transactional, so she can’t easily accept Shuu’s position. It just doesn’t make sense to her. Frustrated, she runs off, and nearly falls victim to an anime classic: the Bundle of Heavy Pipes Precariously hanging over the street above her.
It’s almost history repeating itself: Shuu getting hurt because of her, but both of them are fine, as he teleports the two of them to safety. Kanade, in Shuu’s arms, is still frustrated, but Shuu reiterates, thirty seconds or no, he’s her BIG BRO, and it’s his goddamn job to protect her, no matter what happens to her. It’s her job, as his little sister, to shut up and let herself be protected. Kanade lets Shuu carry her home, and tells him she’ll no longer try to become king just for his sake, but for hers…so she can build a despotic state she’ll rule, like, well, a king!