This is promising.
I clicked on the page just because the cover looked interesting, then read it after I clicked on the mangaka link and discovered it's the one who did Kyoukai Senjou no Limbo, which has always been a sentimental favorite (that didn't get the chance it deserved).
It's sort of derivative - jumping on the post-apocalyptic fluffy drama trend that really took off with Girls' Last Tour, and with a bit of Made in Abyss mixed in - but that's okay. It's interesting so far, and if Yakone gets the sort of character development that Fuu did, it'll definitely be worth it.