After reading it and compared to what I could understood from the Raw, I can say there are parts that are badly translated.
So it's normal that you guys feel confused.
And also, Tsunade's speech (the little monkey) is very hard to understand as it use some kind of dialect. I can understand the mistranslation for this one (not to mention the text full in katakana and I suspect it to have a verbal tic too).
But still, it's important to adapt the meaning of a translation with the situation.
A few fix for example (I only did what I understood the most) :
Page 2:
-Gehegehe, humans!! We're gonna assault you!! Tremble!!
-Hmm, it's lacking a bit in depth.
-Do you have any dried mushrooms?
-Well...
-Hey, something is coming. (text in background: "I wanna eat, quick.")
-Aren't these guys full of gaps? (BG: "They're underestimating us?!")
-Who cares!! Kill them!!
Page 4:
-Okay, let's eat.
-It's been a week now since I've been sent off to this world.
-I've made some friends and have been able to rank up as an adventurer. (BG: Let's dig in!)
-Aaah, I've lost interest of the monsters from this area.
-We need to save up our travel expenses so let's head up to the next area.
-You need to stay more on your guard, Fubuki.
-Eh? Navi, you think so too?!
-Yes, Master.
Page 5, panel 2:
-My current HP is 450 000 you know?
-If it was a normal RPG, it would be to a level of a hidden boss, isn't it?
Page 9:
-We're rank 7 now!
-Starting tomorrow, we can finally take a monster subjugation quest for a larger sum!
-You won't have to go through any hardships anymore!!
You can count on me!!
I have 450 000 HP after all!!
-We'll keep on earning and get a nice room!!
-Fubuki-san♥
-Is this gonna be alright? (BG: "What the?" "What's that?" "I swear on that star!" "You're so reliable..." "Hey.")
Page 10:
-Alright.
-Let's subjugate and earn a lot!!
-Are you looking for a subjugation quest, miss? I can present you a good one.
-Eh, for real?
-Before that, I need you to sign here.
-No, don't do it!! What are signing for, you leopard woman! (BG: "And also, your thumb print." "Okay!")
-Ah! What the...
Page 16, panel 2:
-I'm 16, not a brat!
Page 19, panel 5:
-Then you can just wait for them and go together...
-There's no time.
Panel 6:
-Those movements in the forest for the last 2-3 days...
Page 20:
-I'm suspecting them to be Grizzlys Stampede.
-That's why, I have to investigate Verga/Berga now.
-There you go spouting nonsense again!
-That kind of phenomenon only happens once every hundreds of years...
-Gri-... What was that again?
-It's just an old legend... Nothing like that happened nowadays.
-Navi?