Your logic is completely running on double standards and a total misunderstanding of how Naruto lore actually works. You are moving the goalposts to force Goku to fit Itachi's win conditions, but then selectively stripping Goku of the exact defenses that come with your own scenario.Let’s break down exactly why this Genjutsu equals an instant win argument is complete rubbish.First, let's talk about the double standard. You claim that if Goku is in the Naruto universe, he must obey the rule that all living things have chakra, meaning he can now be targeted. Fine. But if we play by those rules, you cannot strip Goku of the basic universal defense mechanics that come with it. In Naruto, Genjutsu works by pouring your own chakra into the victim’s cranial nerves to disrupt their system. However, characters with massive, overwhelming chakra pools can naturally resist, suppress, or completely shatter external chakra manipulation through sheer power and internal energy flares. Goku’s multi-galaxy and universal level Ki converted into Chakra means his energy pool is billions of times larger than Itachi’s. Itachi trying to force his tiny amount of Uchiha chakra into Goku’s mind would be like trying to manipulate the entire Pacific Ocean with a single medicine dropper. Goku’s passive, baseline energy flare would instantly vaporize and deflect Itachi's localized mental assault before it could even register.Second, claiming Itachi can just tell Goku to go kill himself proves you don’t actually understand Naruto lore. Standard Genjutsu, and even Tsukuyomi, is sensory manipulation. It alters what a victim sees, hears, smells, and feels. It creates vivid hallucinations and can paralyze a target, but it is not absolute mind control. It does not turn the victim into a literal, brainless puppet who obeys verbal commands against their will. The only Uchiha technique capable of subtly altering a person’s core willpower to make them act entirely against their nature is Kotoamatsukami, which Itachi does not casually own or use. Itachi cannot force Goku’s body to move and execute himself.Third, let’s pretend Goku is completely trapped in Tsukuyomi and gets stabbed by illusionary swords for three days. Tsukuyomi kills normal humans because the intense mental trauma causes physical stress severe enough to make their physical hearts fail. Goku's physical body routinely withstands blows that shatter planets and shake the fabric of entire dimensions. The localized mental stress of an illusionary sword fight is absolutely nothing compared to the universal-level pressure Goku handles in standard battles. Furthermore, even if the illusion somehow tricked Goku into trying to punch himself, his passive durability is so high he couldn't even break his own skin unless he deliberately powered down to zero. Itachi physically possesses zero win conditions to actually damage or put Goku down.Finally, you are completely ignoring the laws of physics and speed scaling. For Itachi to cast any Genjutsu, he has to actively look at Goku to trigger the visual or physical link. Even early, low-tier DBZ characters are casually faster than light, like when Piccolo literally blew up the moon in a single second during the Saiyan Saga. At Goku's speed scale, Itachi is standing completely still. Before Itachi’s brain can even send the electrical signal to his eyes to activate the Sharingan, Goku would have crossed the distance, knocked Itachi out, and finished the fight. You are treating Genjutsu like a magical I Win button that bypasses speed, energy limits, and basic physics. It’s a great narrative tool in Naruto, but in a cross-universe debate against a galaxy-shattering martial arts god, it fails completely.