As everyone knows, ninjutsu is categorized into six levels based on learning difficulty.

  S-rank: Secret and forbidden teiques—rarely accessible to ordinary shinobi.

  A-raremely high-difficulty ninjutsu—simirly out of reaost.

  B-rank: Jonin-level difficulty.

  k: in-level difficulty.

  D-rank: Genin-level difficulty.

  E-rank: Academy-level teiques.

  There’s also a separate category for Kekkei Genkai and unique teiques, which don’t fall into these ranks due to their specific learning requirements.

  In general, the higher the difficulty level, the greater the chakra ption and the more demanding the physical and teical requirements. Both chakra nature transformation and shape manipution bee stricter as the difficulty increases.

  The Earth Release: Hiding like a Mole Teique, a k earth-style jutsu, is one of the least chakra-inteeiques at its level.

  Still, it es more chakra than the D-rah Release: Headhunter Jutsu and is slightly harder to master.

  “Good thing my jutsu always end up being a bit different from the inals…” Link thought, relieved as he meticulously studied the Earth Release: Hiding like a Mole Teique scroll.

  To his surprise, a signifit portion of the instrus detailed the best digging postures, which was… a little disheartening.

  With his level of chakra trol, learning a in-level jutsu wasn’t an issue. Mediinjutsu, for example, requires jonin-level chakra trol, and even the respected Medi Mokusa once mentiohat, with enough chakra, Link could qualify as a mediinja.

  After carefully reviewing the scroll, Li fident he had fully grasped the teique. He moved to an open field, focused his chakra, performed the seals, and activated the jutsu—

  As expected, just like with his other jutsu, the chakra for the standard Hiding like a Mole Teique vanished before leaving his body.

  The ground trembled slightly. Then, tless sandy-yellow particles rose from the earth, quickly verging in midair. The particles coalesced into a translut, winged creature with defined scales and a stoure. Its bright yellow eyes gradually flickered with life.

  “Why does this… look so familiar?”

  It suddenly hit him—this thing resembled the Dragon monster from a video game in his previous life!

  Hiding like a Mole Teique = Mountain Drake?

  While Link stood there stunned, a small sciousness seeped into his mind. The creature exuded a vague sense of affe.

  The dragon, about the size of a crow, fpped its stone-like wings and perched on his shoulder.

  “Invisible, flying, capable of spitting stone projectiles—it’s pretty powerful as a summon, but does it have to be so tiny?”

  As Link processed the creature’s abilities, he reached out and patted its head. Its coarse, stony surface felt strangely satisfying. Though it was an ugly monster in the game, its shrunken form had a quirky, endearing charm.

  "Looks like, simir to my Transformation Jutsu, I’ll need more chakra to increase its size and power…”

  After about thirty seds, the small dragon fpped its wings o time and disied into dust, scattering across his vest.

  “My brand-new vest!”

  Lied, carefully brushing the dust off. Konoha-issued vests were free the first time but required payment for repts. He didn’t want it getting ruined before eveering a battle.

  Returning to his thoughts, Link evaluated the jutsu:

  1. Chakra ption: A siandard unit of the Hiding like a Mole Teique drained about 10% of his chakra. It was the most chakra-inteeique he’d learned snifitly more thahe Headhunter Jutsu.

  2. Practical Utility: Unlike his Substitution Jutsu, this teique created a stable, multifunal summon. Its invisibility and flight gave it incredible strategic potential in battles, making it worth further development.

  3. Scability: If increasing the chakra input could expand the summon’s size and power, he might someday ride a massive dragon into bat. That would easily give him an overwhelming advantage against most enemies.

  Despite these exg prospects, Link noticed the earthy residue on his vest and sighed.

  “Should I just go home, ge clothes, and wash this vest before heading out for barbecue?”

  After some thought, he decided to finish testing the jutsu first.

  This time, he eled about 20% of his chakra—double the previous amount—and activated the teique.

  The effects were simir: earthy particles rose and formed a dragon. But this time, the creature was the size of a rge dog.

  “That’s more like it!”

  The additional chakra produotable results. The rger size suggested the jutsu scaled effitly with chakra input. However, the creature’s appearance was less "cute" now—its features were med aly.

  A hint of displeasure flowed through their shared link, as if the dragon didn’t appreciate its new form.

  “Wait… it has self-awareness?”

  Link was stuhe dragon clearly had its own sciousness, albeit a basie.

  Was it the same entity as the smaller dragon he’d summoned earlier?

  The dragon affirmed this through their shared mental e.

  "This little guy is smarter than I expected…”

  Link smiled as he touched its rough, stony body. A flying, invisible summon with a certain level of intelligence could have immeential, especially fathering intelligence.

  Duration Issues

  The summoence seemed limited by his chakra reserves. However, the dragon veyed that as long as he provided a steady stream of chakra, it could persist indefinitely.

  Testing this, Link pced a hand on the creature and funneled more chakra into it. After ing aandard unit’s worth, the dragon seemed stable, but he was left with less than half of his reserves.

  The resulting physical fatigue and soreness reminded him of the toll chakra usage had on his body.

  “, I’ll test its capabilities…”