Chakra Isn't Used Like This

It's a real shame the new book isn't about becoming a 100-year-old 😭

Don't use nuclear bombs as a backup plan, and don't use hydrogen bombs as a trump card; they have space-time ninjutsu. The sun didn't even burn up space properly, so how could nuclear or hydrogen bombs do the same?

Although the new book isn't about turning 100, it's still very good.

By the fourth chapter, the protagonist is already invincible in the entire ninja world, using ninjutsu without hand seals and possessing near-light-speed attacks. What's the point of writing about a harem or playing games later? The author is truly amazing for breaking down the power system in just four chapters.

To be honest, the idea is good, but why did you even include that childhood friend/middle school syndrome girl? It's so awkward.

Well, how should I put it? Isn't it a bit too much of a leap for a biologist from a previous life to invent ninjutsu that involves physics? And isn't it a bit too low a consumption level for a newcomer to develop that level of ninjutsu? Is that reasonable? Don't assume things, go and find out for yourself, it's too outrageous.

This book felt like the author was just indulging in self-indulgence; it was impossible to connect with the plot (or maybe I'm just not that dramatic).

It's really upsetting that there are Chunin Exams during wartime! Aren't exams only for peacetime? When war breaks out, who's going to play house with you?

Doesn't the author feel embarrassed looking at this?

Since reading the first few chapters of this book, I've learned: Ninjutsu Secret Technique - The Technique of Carving Out a Three-Bedroom Apartment with Your Toes 😅 It's so cringeworthy 😅 It's so embarrassing to read.