In all of Doraemon's adventures, which time did Nobita behave the most bravely and heroically?

Ha, this is one of the favorite topics among Doraemon fans! If you ask about Nobita's bravest, most heroic moment, many people might have different first reactions, because Nobita almost always has a shining moment in every feature-length movie.

But if I absolutely had to pick the one with the "highest gold content," the champion in my heart will always be—

🏆 My Champion Pick: Nobita and the Steel Troops (1986 / 2011 Remake)

Why this one? Because it best exemplifies how an ordinary person can summon truly great courage in the face of utter despair.

What Happened?

Simply put, Earth is targeted by a powerful robot army called the "Steel Troops," who plan to conquer the planet and enslave humanity. These robots are incredibly powerful; even Doraemon's gadgets are almost useless against them. Everyone is plunged into unprecedented peril.

Nobita's Heroic Act:

When everyone was on the verge of giving up, Nobita made an astonishing decision. Using the "Anywhere Door" and the "Time Machine," he traveled alone back over 30,000 years to the robots' home planet, Mekatopia, when their ancestors were first created.

His plan: Find the robots' creator and modify their core programming at the source, changing the ancestors' "warlike" nature to "peace-loving and helpful."

Why is this the "Most" Heroic?

Solitary Courage: This wasn't a charge into battle surrounded and encouraged by friends. Doraemon had been attacked and "shut down," while Shizuka and the others were barely holding the line on the front. The burden of saving the world was conceived and shouldered by Nobita alone. Imagine the usually tearful, timid boy piloting the Time Machine by himself into an unknown, hostile past – what incredible resolve!
Willingness to Sacrifice: He undertook this mission with no thought of whether he could return. He even left behind a note resembling a will, telling everyone what to do if he failed. This wasn't impulsive recklessness; it was a heavy, considered heroism – a willingness to sacrifice himself for his friends and the world.
Transcending His Usual Self: In other stories, Nobita's bravery is often forced upon him or achieved with friends' help. But in Steel Troops, his bravery is proactive, well-planned, and solitary. This completely overturns his usual image as an "underachiever," revealing the brightest part deep within him – that kindness and resilience that makes him willing to risk everything to protect what matters most.

🌟 Also Shining Heroic Moments (Honorable Mentions)

Of course, besides Steel Troops, Nobita has many other heroic moments worth mentioning:

Nobita and the Haunts of Evil (1982)
- Heroic Act: When everyone else decided to abandon the perilous journey and go home, only Nobita insisted on going back. He had promised the dog "Bian Bian" (actually a prince) to help him defeat the villains. For the sake of that promise, he was willing to face the dangers of the haunted land alone. This courage born of keeping a promise is equally moving.
Nobita and the Tin Labyrinth (1993)
- Heroic Act: Doraemon was captured and completely destroyed, his fate unknown. Nobita, who always relied on Doraemon, had to act alone this time. Instead of giving up in tears, he sneaked into the enemy's heavily guarded stronghold by himself, doing everything he could to save his best friend. This was courage ignited for a dear friend.
Nobita's Dinosaur 2006 (Remake)
- Heroic Act: When his friends were being hunted by vicious dinosaur poachers, Nobita picked up his trusty toy gun. At the critical moment, he showcased his "marksman" talent, using precise shots to knock the weapons out of the enemies' hands, protecting everyone. This proved that his usually "useless" hobby could become a power to save everyone when it mattered most.

To Sum Up

Overall, in every feature-length adventure, Nobita grows from a child needing protection into a little hero capable of standing on his own.

But the reason Nobita and the Steel Troops holds the highest place in my heart is that this time, his heroism wasn't just simple "bravery," but a "resolve". He truly understood the meaning of responsibility, sacrifice, and protection, and he acted upon it.

This is perhaps what Fujiko F. Fujio wanted to tell us: A hero doesn't necessarily need superpowers. An ordinary person full of flaws like Nobita, when what they cherish most is threatened, can also shine brighter than anyone.