Jobless Reincarnation: The King with a Mental Problem

[Year 409 of the Kakuryū Calendar]

I'm already four years old, and Uncle Rudy has been reincarnated for two years. It's time!

He carried Rudy to the study, tilted his head back, and said mysteriously, "Silly little brother~ Today your big brother is going to show you something amazing."

"Hmm?" Rudy asked, puzzled.

I rubbed my forehead with one hand and glanced sideways at my foolish younger brother: "I am destined to become the Shadow King, secretly saving the world! And what I'm going to show you is magic!"

"Hmm..." speechless.

Although Rudy didn't say anything, his expression of pity was clearly visible.

Do you think I'm some kind of kid who's developed chuunibyou (middle school syndrome) too early?

"Don't look at me like that with a pout. Your older brother is the destined king."

"╭(╯^╰)╮Hmph!"

Rudy looked disdainful.

I held up one finger and pointed it straight out the window.

Just one water balloon spell was enough to make Rudy's eyes widen.

"Huh?!" Surprised

"There's something even more amazing! Watch me unleash an endless barrage of water balloons!!!"

Water balloons shot out of the window like machine guns.

"Damn it!"

I admire your teeth and jaw! Brother!

I guess that's what he was thinking.

"Want to learn? Offer yourself your loyalty, and the Shadow Lord will personally teach you!"

Lilia heard some strange noises, opened the door and came in to see a two-year-old child kneeling on one knee in front of a four-year-old, while the older child stood straight like an emperor, then took a spoon and touched his left and right shoulders to bestow a medal upon him.

The king noticed the maid, Lilia.

That disrespectful look again...

Ignoring Lilia, they continued awarding medals, and Lilia left shortly afterward.

I began to tell Rudius about magic.

Rudius didn't disappoint me; following my instructions, he perfectly cast the water ball spell on his second attempt without any chanting, sending it flying far away.

I wasn't slacking off recently; I've been testing various factors that affect the power of magic and have successfully identified some patterns.

Simply put, it allows you to unleash more powerful magic with less mana, but it requires the skill of casting without incantation.

In particular, there has been a qualitative leap in the speed and power of the projectiles, the core of which is the kinetic energy formula—mass and thrust.

Taking water balloons as an example, magicians usually increase the power of a magic trick by using more magic power when using it, while also increasing the initial velocity and volume of the balloon to create greater power.

However, the size of the projectile directly affects wind resistance, so although more magic power was used, the increased power was not proportional.

After the improvement, the magic will no longer create a larger water ball, but will instead be used as propulsion, resulting in a water ball of the same mass but with a faster speed.

Further improvements resulted in water droplets the size of fingertips. Although the impact force was reduced, the penetration was stronger, and dozens of water droplets could be launched at once, simultaneously.

It consumes less magic, moves faster, and hurts more – this is the Water Shotgun.

No! It should be—Light Flow Instant Water · Sky Soaring Scattered Dance · Zero Style

Furthermore, significant progress has been made in other experiments following the success of this one, such as...

The king was pleased with his own wisdom.

But his knight had already fallen asleep due to exhaustion of magic.

......

"Hmm...I've got it!"

Wang stretched out his hand and released a puddle of clear water into Rudius's crotch.

Then he shouted loudly outside, "Mom! Ludius wet his pants!!!"

The struggle for the crown prince position has always been like this.

【the next day】

"Lord Rudius, don't be sad. Although you collapsed after only casting two water balloons, it doesn't mean your magical power is limited. What the books say is incorrect; that's just the self-righteousness of mediocre people. In my observation, your age is a period of rapid magical growth, especially after you've used up all your magic..."

"What hurts me is why you said I wet my pants..."

"...Forgive me...Rudy." Wang pressed his middle and index fingers together, trying to tap his foolish younger brother's forehead. "This is the last time."

Unfortunately, the brat didn't appreciate it and slapped it away.

"Are you kidding me! How could I possibly forgive you!"

"Unforgivable... Is this all it takes to sever our bond..." The king turned away sadly, unable to look his younger brother in the eye. "Then this magical secret technique that I wrote myself can only..."

"So, all you can do is compensate me, is that it?!"

"...we'll just have to continue researching until the next stage."

Rudius knelt on one knee again, "My king! Please give your knights your trust! Give your knights wisdom! Give your knights strength! Your knights will repay your kindness with their lives!"

"In that case, accept this trust, my most loyal knight!"

"I will not fail in my mission!"

"This secret document contains many illogical and rebellious elements. You and I are walking a path that goes against the grain of humanity. Such a secret must not be revealed to outsiders."

"Yes, my king!"

Lord Rudius, the knight kneeling with his head bowed, couldn't suppress a smile on his face as he faced the floor.

After putting down my notes, I went to the courtyard to watch Paul practice his sword. Now that the work on improving basic magic has been completed ahead of schedule, it's a good thing to have extra time to watch Paul practice.

Paul seems to be a genius, even though he's a scumbag. But his Sword God Style, Water God Style, and Northern God Style are all of superior strength, and his overall combat power is at the Saint level. Moreover, he's only in his twenties, so he still has a lot of room to improve.

Paul wielded his sword with lightning speed, his upper body bare, the afternoon sun shining on his sweat-drenched muscles, releasing hormones onto the women of the entire village.

Was this guy really not doing it on purpose?

Warm sunshine, golden wheat fields blanketing the hills, a gentle breeze rustling the grass and trees—it's a perfect day for a nap. (Touching the ground.)

Upstairs, Rudius began flipping through the king's notes and textbooks.

[Rudy's Perspective]

[Magical power is not fixed; rather, it increases rapidly during childhood through training...]

There's even a statistic that records the daily growth rate! When did this guy start researching this? And there's even an improved version of basic magic? With both chanted and non-chanted versions?

After a brief trial, Rudeus did indeed notice an increase in magical power and also mastered the Water Shotgun.

It's actually true that it defies common sense and is rebellious; this is the Middle Ages, after all. If word gets out, won't I get burned at the stake...?

I, Ludius, am a time traveler, not a true genius, and I am well aware of that.

But now I am even clearer that a true genius is right in front of me. He was taught to read at the age of two and to switch to magic at the age of four. This is a setting that even fantasy novels dare not easily adopt!

And I, Ludius, received such a generous gift just for playing some cringey game with this guy! I've hit the jackpot! My life is now full of hope!