Konoha: After the Diary Was Exposed, the Kunoichi Fell Apart

It was enough to make anyone jealous!

[Ding!]

[Congratulations, Host! You have completed a diary entry and received a reward: Rapid Growth!]

At the system's notification in his mind, Naruto Uzumaki sprang up from the sofa.

Rapid Growth!

That was his reward this time. It was perfect.

Naruto couldn't help laughing.

He hadn't been this excited even when he'd obtained the Flying Thunder God, the Wood Release Kekkei Genkai, or the Perfect Sage Body.

There was one reason for that:

A description of Rapid Growth had appeared in his mind.

[Rapid Growth: Instantly brings your body to its physical peak (irreversible).]

Which meant...

He could have an adult body!

The description said it was "irreversible," but Naruto didn't care.

If he could be a man,

why would he choose to stay a boy?

With that thought,

Naruto took off his clothes and went into his room.

"Rapid Growth!"

As Naruto murmured the words, he felt his body begin to change at astonishing speed.

In a single instant,

he had grown into an adult...

Yugao: Now I'm in Trouble

Thanks to the system's reward,

Naruto's body began to change rapidly.

In a single instant,

he went from a boy to a grown man.

His once boyish face took on sharp, chiseled features.

Powerful muscles gave his whole body a hard, defined shape.

Most importantly,

his invincible little brother was back.

"So this is the power of the Perfect Sage Body at its peak?"

Naruto closed his eyes and took stock of the power within him.

He could feel

that the Chakra in his body

had increased several times over.

And that was saying something,

given how enormous his Chakra reserves had already been.

Now they had multiplied again.

Naruto felt that even the Nine-Tails had