cuz it's been a while, I could not remember everything correctly, mind you.
> how mr. no1 hunter finally be able to go home.
in the novel, it was going to happen later after that scuffle with the corrupted nobles had some follow-up events. And the way it was done was by making a deal with "Jiha", but due to Jiha's still learning, the deal couldn't be said as without side effect (random), but he accepted it anyway. The method was using a magic scroll bestowed by "Jiha", and the price was his memory of "Jiha"
> how Jiha obtained the book about dungeon system tampering
I forgot... either he visited a sanctuary on a floating island that was Ark's (former) residence when that place got unlocked along with some specimens; or another not-so-cute demigod (the goat) lend him that book.
> how miss paper magician had her wish granted
Jiha gave her the same scroll of luck, but the place, the item, and the unlucky moments were different
> how the fiery lady had not-a-romantic event with Jiha
she spends some times in Jiha store on almost daily basis y'know to woe him mostly (and having a person who she could talk to normally, without getting too fiery)... but Jiha was unfazed with romance as always.
only the novel reader knew what had changed...
but, it's simpler this way