Responses
That very same red head girl who sacrificed herself so Vlad can reach the top. She was selfless, she's the best fl in all action manhwas I've ever read. She didn't put him aside when he had nothing. She gave her own hair to help with Vlad.
No chemistry? They have the best chemistry in all action manhwas where the relationship feels forced, like in Solo Levelling.

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So am I the only one who wouldn't like the red hair girl to be the fl like when startin' this manhwa at first I'd always think they had a siblings relationship so when she turned jealous n tsundere all of a sudden when meetin' vlad I wasn't into it like instead I'd have liked the blue hair girl to be the fl it seemed they had more chemistry too