But Sakura knew the truth: some legends were meant to stay between worlds.

I think that's a solid approach. Let me formulate the response as a short story, ensuring all elements are included and content is appropriate.

Balancing her dual lives, Sakura discovered her classmates gradually noticing her odd absences. Her best friend, Aiko, joked, "You’ve been dodging the math test like a boss lately—what’s your secret?" Meanwhile, in the game, the King’s kingdom crumbled, his pixels decaying. "The Crystal will fall if your determination wavers, Hikari," he warned.