Isekai de Maou wo Taoshite Nihon ni Kaettekitara, Chijou ni Dungeon ga Shutsugenshimashita Chapter 33 Discussion

So... this is just another wish-fulfillment novel where protagonist is a loser in his world, got isekai'd, then later returned as a winner. Oh yeah, props to Zetro for their flawless translation as always, here is the reason why I gave this novel a low rating :

Spoiler

Protagonist casted a very strong fire magic inside a cave. But thanks to our big brain, genius, and talented author, Protagonist and people around him didn't get suffocation or asphyxiation due to smoke from his fire magic in enclosed cave. What a good story-telling right?

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Spoiler

Our Protagonist himself usually laid-back, and calm on most situation. This is included when he casually dealt a monters hazard & stampede, and also protagonist stated that back then in another world, he used to see people die everyday. This is actually pretty neat, since I finally begin to enjoy his personality. But then, the author ruin his character by make him stuttering like a damn 1-year old toddler when Protagonist asked by his sister about mysterious person who single-handedly destroy monster hazard (of course that person is him). I mean... really, Author?

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I'm not dropping this at the moment, but let's just see few chapters ahead whether Author keep make mistake or not.