Naruto: I start with one door, and I can open it infinitely.

Known problem.

Can other sects travel to the Naruto world? [No]

Why did this door appear? [It might be related to his obsession with Neji.]

The bedroom door is special; is it the only door that can transport you to the Naruto world? [Yes, five times.]

Why can the bedroom door travel to the Naruto world? [It might be related to obsessions and thoughts in the mind, five times.]

……

Will it continue to possess the tenant farmer's child? [No, four times]

Will the identity you transmigrate into always be that of a child? [Yes, five times]

What could possibly travel from a bedroom door into the Naruto world? [Consciousness, memories, five times]

What happens if a cell phone video travels through the bedroom door? [The body will disappear, the bedroom door will close automatically, the body's whereabouts are unknown, and the journey takes place unconsciously.]

What can currently pass through a bedroom door? [The body and clothes, items in pockets such as cigarette cases and lighters can pass through, but their destination is unknown; they haven't reached the Naruto world yet. Five times.]

……

Can one control their identity after transmigrating into the Naruto world? [No, five times]

Can the timeline of traveling through the Naruto world be controlled? [No, five times]

Is the location of the travel possible to control, or is it random because it involves associating with Naruto storylines or characters, or is it simply a matter of random association? [The travel location is completely random and has nothing to do with any association.]

After transmigrating, will my body in the real world be in danger? [None yet, five transmigrations]

How much time passes in the real world each time you travel to the Naruto world? [Five minutes, five times]

……

Unknown issues

Where did the body go? [Unknown]

Could this door lead to other worlds? [Unknown, not attempted]

Is it possible for me to pass through the Hokage's gate? [Unknown, unverifiable, illegal]

Does each time travel lead to the same timeline? [Unknown, the travel time was too short to verify.]

Is that tenant farmer's child still alive? [Unknown, timeline and location differ, cannot be verified]

What is the flow rate between the two worlds? [Unknown; the five time travel locations were too dangerous, and there was no opportunity to verify the flow rate.]

Could this door bring out items from the Naruto world? [Unknown; the five previous travel locations were too dangerous, and there was no opportunity to try.]

……

The remaining unknowns are all easy to verify, but let's just leave it at that: Where did the body go?

Since the door wouldn't let him know where his body had gone, he couldn't be bothered to investigate further. As long as his body was alright and no parts were missing, he didn't care where it had gone...

Now, he needs to verify other questions. He pulls out anime photos of One Piece on his phone, imagines the Thousand Sunny, then opens the bedroom door and finds that the door leads directly into the bedroom. It seems he can't travel through One Piece.

He picked up his pen and crossed out the question, but after only two strokes, he wrote "temporarily" after the question.

Just because it doesn't work now doesn't mean it won't work in the future. It's possible that his obsession with Naruto is too deep, and he can't open the door to other worlds without completing Naruto.

Other issues are out of the question; they're basically unverifiable and illegal, so he wouldn't dare try them. Now there are only three questions: the flow of time, whether he can bring anything out of Naruto, and whether he's traveling to the same timeline. He's counting on the gold in the Naruto world to pay off his mortgage.

He tore the paper with the questions written on it from the notebook, put it in his shirt pocket, and zipped up the pocket to prevent it from falling out.

The Hokage Sect is his secret. Even if it's just a written record, he doesn't want anyone to know. Anyway, his body's whereabouts are unknown, so he just needs to keep the record of his questions close to his body.

Next, he went downstairs to the supermarket to buy fast-heating foods and bottled water with long shelf lives. When he came back, he emptied the refrigerator and turned it off. He threw away all the foods with short shelf lives that needed to be thrown away. Then he moved the refrigerator to block the door, which took up the entire entryway. He added a few sofas and other heavy objects to block the front door, ensuring that no outsiders could get in.

Then he closed all the windows, drew all the curtains, and shut off the water, electricity, and internet to the entire house, effectively sealing it off. Since he was under home quarantine from time to time, not many people would come over, and no one would bother him.

Next, he will keep opening doors and trying until he gets a decent ninja to start with...

……

The Land of Fire, Konoha Village—

After swiping the bedroom door hundreds of times, he finally settled down in Konoha Village. This time, he had both parents, and he started as a child again. This time, the lucky old man was a ninja, a Chunin who had retired due to injury...

Overall, it's pretty good. It's the best start I got out of hundreds of attempts. After all, there's a saying that having both parents is the highest level of success in the ninja world. What more could you ask for?

He never got any diseases like conjunctivitis or white eye, not even one of the twelve strong ones.

He suspected he might be being targeted. The drop rate made him wonder if he was playing a Tencent game with secretly changed mechanics, pitiful drop rates, and no pity system. It was incredibly frustrating.

The game has a really strong "goose" vibe, and it's full of Tencent's petty and stingy attitude. They've never even gotten an S-rank card, let alone a top-tier legendary rare SSR card.

If we replace ninja ranks with card rarity, Genin are C-rank cards, Chunin are B-rank cards, Special Jonin are A-rank cards, Jonin are S-rank cards, Elite Jonin are SS-rank cards, and Kage-rank is SSR-rank card.

I've opened the gate hundreds of times, and it's appeared in every ninja village. This is the best starting configuration I've ever had: a good family background, both parents alive, all my limbs intact, well-fed and clothed, good-looking, and even a little handsome...

The remaining characters either come from single-parent families, are orphans, are ordinary people, are not from ninja villages, or are from very dark backgrounds; most are ordinary children without ninja talent...

Most other ninja villages start with orphans, never having a family with parents. It's like a cursed lone star. The game mechanics must have been secretly changed, not because of bad luck. After all, he doesn't always fail when he tries to fish.

After summarizing the drop rates of the five major ninja villages, he concluded that the drop rate of C-rank cards was the highest, followed by B-rank cards. Among the five major ninja villages, the probability of having parents or being from a single-parent family in Konoha was the highest, followed by the other four major ninja villages, given the sheer number of ninjas.

The other four major ninja villages only had single-parent families once or twice, and those were mostly genin and chunin. The remaining smaller ninja villages were even worse off, with no ninja families ever appearing. They were all ordinary people with poor ninja talent who couldn't even refine their chakra.

In Konoha, whether you're a genin, chunin, or even a jonin, whether you come from a single-parent or two-parent family, the drop rate is the highest.

There was even an A-rank card that was revealed once, but unfortunately that special Jonin was already ruined, with only one-tenth of his skills remaining. He probably suffered from some kind of post-war psychological syndrome. He even abused his wife, was addicted to alcohol and gambling, and took his anger out on his children. He was a complete scoundrel.

Working with such a rotten person would be unbearable for even an adult, let alone a child. In the end, after weighing the pros and cons, he decided to abandon the idea of ​​reopening.

Anyway, there's no limit to the number of attempts, it's just that the drop rate is a bit low. As long as there's still a drop rate, you can eventually get a top-tier legendary SSR card by trying a few more times.

Of course, not now. He's six years old now and has finally reached the age to go to school. He thought that after losing his job, he would have to forget his Japanese with the PE teacher, but who knew he could time travel.

Yesterday, the registration for the ninja academy ended, and he was fortunate enough to become a student at the ninja academy. Could this be considered re-employment, except that he would not be doing foreign trade business, but instead switch to being a ninja?

He can finally spend his childhood at the ninja academy in peace, learn some ninjutsu properly, and not have to go to the battlefield so soon. He should be able to live to be twelve years old! I hope so!

He has opened the door hundreds of times and come into contact with chakra more than ten times. The Ninja Academy exam is no longer a challenge for him. He has already mastered the basic Three Body Techniques and has even recorded the number of times he has used them since his transmigration.

[E-rank Ninjutsu, Transformation Technique, 1350 uses]

[E-rank ninjutsu, Shadow Clone Technique, 1230 uses]

[Rank E Ninjutsu, Substitution Jutsu, 1630 uses]

With thousands of practiced uses of the Three Body Techniques, passing the Ninja Academy's exams is a piece of cake.

Actually, he had a good start before. Of his hundreds of openings, the longest he survived was only a little over three months before he had to leave, which was a pity.

There was no other way; the living conditions were too harsh, so he could only try to survive for the time being. This time, he managed to live until the start of school. From the age of three to six, he endured three years of hardship and finally made it to school.