A/N: I find this idea very interesting and I hope maybe someone will use this idea.
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MC dies. (You could give the MC a profession that he had in his previous world thay could help him in HOTD, for example a doctor, engineer etc)
"..."
Meets god and chooses to be reincarnated. However, the MCs fate will be decided by a spinning wheel which will choose the world he gets sent to along with one ability or skill ranging from an ability like eidetic memory or a skill like master chef.
The MC ends up very unlucky as the world he will be sent to is Highschool of the Dead however he gets a special ability called 'Left Hand of God'.
The MCs background can be that his father was a soldier and he taught the MC since a young age or some bullshit like that.
[A/N: Although you dont need an anime world for this kind of story with a zombie apocalypse, I chose this world because of the already existing characters which i find interesting and it will also make the writing process easier.]
You can also chose the MCs looks and stuff like that (Make the MC look like Itachi coz hes badass.)
The MC gets reborn on the day of the appocalypse. When he opens his eyes he wakes up in class with the memories of the body he took over.
(If the MC was reborn earlier it would kind of ruin the story as he would have a certain amount of time to prepare for the apocalypse.)
This is where you decide if you stick with the main cast or maybe take one or two characters and leave the rest. I would stick with the main cast and become their 'leader' but anything works.
Go along with the events in the anime.
Write about looking for equipment, food, weapons, cars. Write about doing raids on different military bases. Wrire about the different types of zombies and how they evolve. Write about building a base and finding survivors for their own group. Finding zombie nests.
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A/N: In this type of story you just need good creativity to keep the readers enterained by bringing in new ideas or plots. Anyways if you decide to use this idea then good luck!