Wow, Wuk Lamat is really single-handedly ruining the DT story...

[LisseyCrowe]

"I had been already in the palace some time when Lamaty'i came to join us."
"Like me, she had been cast aside by her parents. I knew the pain of solitude, and wanted to spare her that suffering."

Those are the exact words he said. Yeah, he didn't want her to grow up alone, but he did get attached based on the false idea that she had been abandoned.

Either the writer forgot his own setting, or Koana got cheated.

Hmm, nevermind then. I could try to salvage it by saying she was still cast aside for benevolent reasons but I won't ... If anything that's maybe yet another angle the story failed to grasp then. I guess it could still happen (but let's be real, I'd be surprised if it did) but him learning that her father is still alive and well and loves her could've possibly sparked some drama between the two, especially with the "reveal" that Koana is actually more emotional than he seems. That plus a heartfelt reconciliation would've made them sharing the throne a lot more earned.