Well, Deku's arm loss happened when he faced an adversary whose abilities were beyond what he could handle. It was a high-stakes moment that had a huge impact on the story.
Sasuke might be in shock at first. He can't believe that Naruto is dying in his arms. He may feel a great sense of guilt, thinking that he could have done more to prevent it.
Well, in some versions of this fanfiction, it might be that Naruto uses a powerful and forbidden jutsu to defeat an overwhelming foe. This jutsu drains his life force, and Sasuke, who has just realized how much Naruto means to him, catches Naruto as he collapses. It could also be that Naruto is poisoned, and Sasuke tries his best to save him but fails in the end, and Naruto passes away in his arms.
Xu Pingfeng's ending in " Dafeng Watchmen " was death. Before the supervisor was removed from the Supreme Buddha and reduced to a seventh-grade Guanyin, Xu Pingfeng took the opportunity to attack and severely injured the gatekeeper. However, the other party's resentment counterattacked before he died, and both sides died together. Therefore, Xu Pingfeng had lost in the battle with the gatekeeper.
While waiting for the TV series, you can also click on the link below to read the classic original work of "Dafeng Nightwatchman"!
Thanos lost in the comics mainly because the heroes were able to find weaknesses in his plans and strategies. They also discovered ways to counter his immense power and ultimately emerged victorious through their unity and courage.