What could be the possible ending of the story where a man carried his dying wife?

There was a novel called " The Peak of Martial Refinement ". The main character was Lin Dong, who was accidentally taught inner strength and martial arts by an old man. During his training, Lin Dong encountered a young man with his back facing him. This young man seemed to be the disciple of that old man. Furthermore, the dying person on his back was the old man that Lin Dong had once saved. This young man taught Lin Dong martial arts and inner strength training methods, and Lin Dong began his own martial arts training. This novel was a modern style martial arts novel with ups and downs in the plot and vivid characters, which was loved by many readers.

Infidelity could be a reason. If one partner cheats on the other, it often shatters the trust in the relationship, and the betrayed partner may decide that they can't continue. Also, communication breakdown. If they can't talk to each other about their problems, small issues can turn into big ones, and eventually, the man might feel that divorce is the only option.

In some fanfictions, it could be related to the magical core inside Harry. Maybe his magical core was damaged in some way, and over time, it weakened to the point where his body couldn't sustain itself anymore. Since sleep is a vulnerable state, that's when his body finally gives in. Also, it could be part of a complex plot where the author wants to explore the reactions of other characters to Harry's sudden and unexpected death while sleeping. It can create a lot of drama and angst among the remaining characters in the story.

The man could be describing his wife's kindness. For example, he might talk about how she always volunteers at the local community center, helping those in need. This shows her selfless nature and big heart.

Perhaps it's a story of how they met. He could talk about the first time he saw her, what she was wearing, and how her smile made his heart skip a beat. Then he could go on to explain how their relationship developed from that initial encounter into a loving marriage.

It could be due to severe mental illness or untreated psychological disorders that led him to commit such a horrifying act.

Maybe the man successfully cuts down the tree and uses the wood for whatever purpose he had in mind, like building a fence.

It's a pretty wild and unexpected scenario. Maybe it leads to a quest for revenge or a search for a way to stop such fish attacks in the future.

Perhaps it has to do with a new and mysterious disease. In fanfiction, new and unique diseases can be created. This disease could be something that attacks his unique chakra system, which is different from others. Since his body is so reliant on chakra, if the disease disrupts it enough, it could lead to his death.

Perhaps in this fanfiction, on his birthday, Naruto is targeted by a powerful curse. This curse could be placed on him by a dark sorcerer who wants to end the hope that Naruto represents. As the day progresses, the curse slowly drains his chakra and eventually his life, while his friends are desperately trying to find a way to break it.