Might Guy's Comeback: Can He Fight Again after the Gate of Death?

In the Naruto series, Might Guy sustains severe injuries during his fight against Madara Uchiha, and unveils the Eighth Gate of Death to unlock immense power. However, this technique comes at the cost of his life. After the battle, Naruto uses his healing abilities enhanced by the Sage of Six Paths to save Guy's life, but the damage from the Eighth Gate leaves Guy permanently paralyzed. As of the Boruto series, there has been no indication of Might Guy fighting again.

Short Answer:

Yes, Guy can and does fight after the war and is shown to be active in a wheelchair. Naruto used Yin-Yang Release to stop the Gate of Death from taking its toll on Guy. Despite being in a wheelchair, Guy can still perform and engage in combat.

Long Answer:

Retirement from Active Duty

Although retired from active duty, Might Guy is still capable of fighting. In Boruto episode 70, he demonstrated his ability to fight while standing on one leg and keeping his cast up in the air and out of the way. This low-effort spar against a couple of genin still showcases his combat skills.

He can still perform a Dynamic Entry strong enough to make a building crumble, and he doesn't even need to get out of his wheelchair to do this. In the novel Kakashi Hiden: Lightning in the Icy Sky, which takes place after the war but before the Boruto era, Guy holds his own against a terrorist on a plane, keeping him occupied despite having the handicap of being motion sick on a moving plane. In Konoha Shinden: Steam Ninja Scrolls, which takes place during the Boruto era, Guy is seen effortlessly taking out a group of enemy ninja and is described as being "ridiculously strong." In the corresponding episode in Boruto, episode 111, this is further highlighted.

Conclusion

Despite his retirement, Might Guy remains a formidable figure in the world of Naruto and Boruto. His ability to still fight, even while in a wheelchair, is a testament to his resilience and the power of the Sage of Six Paths' healing abilities, making him a constant presence in the ongoing struggles and missions of Konoha.