Nagi no Asukara Episode 20 Discussion

Ari-Okojo said:

I agree , I don't see the appeal. I mean it's cute and all that she kept her crush from when she was like nine, but I don't see how that could develop into real romantic feelings from such little interactions. I think the only thing that strengthened it was his absence

I honestly don't understand how anyone could sympathise with Miuna. I get not wanting someone around due to jealousy, but that's completely different when someone's life is actually on the line. Manaka isn't even someone Miuna disliked and Hikari is someone she barely knows, yet that even for her to wish death upon the poor girl who saves her mother for their happiness! She was right to feel ashamed such ugly feelings. Miuna has traites besides liking Hikari, wanting to be Manaka in his eyes, and wanting to force herself in between fully formed bonds instead of creating her own. I don't think Miuna's a horrid person, she's still just a child, but I don't see how she's worth being liked.

I understand this is very opinionated and will set people off, but for those on the opposing end with reason, please, enlighten me.
(That all stay bffl's)