Goku, mysteriously teleported to the Narutoverse, through unknown means cause fuck you that's why logic. After dimension hopping, he became really hungry and flew to the nearest Ramen store with the speed of 9001 times the speed of light. Also, ignoring wind frictions, cause magic bitch.
Anyways, his destination became visible to eyes, with a sign reading "Ichiraku Ramen". He stopped to a gentle float, in front of the shop, without anyone suspecting anything suspicious cause Konoha doesn't have any security system and flying people with orange outfits are tote normal.
Goku, greeted the shop owner, with his usual greeting, "Hey! I'm hungry!"
The shop owner replied with some surprised due to not knowing the man, "Please come in and sit down."
Goku takes a sit, and told the shop owner, "I would like to have 9001 miso ramen please!"
The shop owner replied with a knowing voice, "Coming right UP!"
After 1 seconds, the shop owner made the miso soup. Which Goku sucked into his mouth like a vacuum, cause logic bitch.
While Goku was eating his miso ramen, the shop asked, "What's your name young man?"
Goku replied with difficulty due to his vacuuming of miso ramen, "Ma *slurp* Na *slurp* S *slurp* Go *slurp* ku *slurp*."
The shop owner replied, "Hahah, what a funny name. Anyways, my name is Teuchi. I run this shop with my daughter, but she's away right, probably banging Naruto or something."
Goku replied, "Oh, that's nice." In between vacuuming.
Goku keeps on vacuuming the incoming food, unknowingly being poisoned by the now named Teuchi. Before Goku could reach his 9000th bowl of miso ramen, he dropped dead by poisoning.
THE END!
Also, Teuchi has 9 rinnesharigans. That's how he made his unknown poison called poison X. Cause why not bitch. Also, Teuchi is the father of Hamura, and Hagoromo. He used his rinnesharigan to travel to the point of time where Kaguya ate the chakra fruit. He took her by surprised, and gang banged her with his gangbang no justsu.
Also, his fart is so strong, that if transported to the DBZ universe, and farted afterwards. Everyone would die, even that Cat god, whatever the fuck his name is.