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It's still quite far. But the way they banter all the time can be considered flirting from other characters' perspective lol. The moment Ethan realises his feelings he starts to confess all the time and also becomes hella clingy, to the point when you compare it to his behaviour at the start of the story you'd think they're different people entirely. The FL puts off replying to his confession for quite some time but, again, from Nox and other's perspective it's obvious she likes him back.
They do kiss and confirm their feelings to be mutual before the ending, so you'll get to see a satisfactory amount of their relationship (at least, in my opinion).
If you want more spoilers, do tell me! I finished the novel just a while ago so the plot is still fresh in my mind.
I read it on booktoki with the help of google translate! Here's the link:
https://booktoki467.com/novel/2042013?stx=%EC%9A%B0%EB%A6%AC+%EC%A7%91%EC%97%90+%EA%B0%87%ED%98%80%EB%B2%84%EB%A6%B0+%EB%82%A8%EC%A3%BC%EB%93%A4
He was on his way to meet cherry with the weapons she ordered when the apocalypse started, so he got there. He'll escape along with Jose (the guy he hired as a weapon instructor for Cherry), and later join Vanilla to arrive at the happy mansion. They'll probably be here in the next 10 chapters or so.
(Ik you only asked where Harrison was atm, i feel like spoiled more than necessary )
Yes, tho not too late in the story. There are no second female leads. As for second mls, nox is probably the only one. There is another important male character who has feelings for the fl. But he doesn't really count since he himself doesn't want that kind of relationship with the fl, well it's more complicated than that but I can't really explain because then I'd have to spoil the whole plot.
can someone spoil me about the romance development?