Zombie Land Saga Project

"Zombieland Saga project" is the mystery Kotaro project to save Saga. Tatsumi explained that the girls who became "Legend" in life were revived as zombies, and the plan was to save Saga as a new group of local idols in Saga, with the aim of making Saga recognized through tourism and avoiding the depopulation of this, the details of this project are unknown.

Presumably the Bar Master that appears in episode 11 is involved

Zombie Land Saga Project
It is a project of zombie idols. Tatsumi explained that the girls who made "Legends" in life were revived as zombies, and the plan was to save Saga as a new group of local idols in Saga.

The most popular speculations speak that the true background of this plan is only to make Sakura fulfill her dream of being an idol, since she could never achieve anything in life, but apparently she is more inclined to save Saga from depopulation by attracting tourists.

In episode 11 of the anime the Bar Master mentions that Kotaro's brain rotted, since he thought it made no sense, we are also given another name "the original zombie village: hizen's dream highway project", it is a response To that it is mentioned that their objective is to express compassion for humanity, it is theorized that what was shown in the 12 episodes of the anime is only the tip of the iceberg

In the diary of the last episode Kotaro mentions that Arpino will mark a before and after, since there is the true beginning of the project

Confirmed
Unknown

Fret
Kotaro killed the 7 girls to later revive them Kotaro killed Sakura to include her in his crazy plan
 * Oops, the same series unconfirmed this
 * The final episode indicates that they were only classmates

Kotaro is actually a zombie.
He simply hides it with his sunglasses and makeup skills.
 * Except he was in the rain, just like Sakura, and she looked normal while her makeup was washed.
 * He had an umbrella, so it is still a possibility.
 * He was seen bathing in Episode 4 and still looked normal.
 * Episode 7 states that Kotaro has a large amount of extra strong waterproof spray that can prevent girls' makeup from running off in the rain, so this is still possible, but raises the obvious question of why he hadn't used it. on the girls before now.


 * Episode 11 suggests that it could be immortal.

Policeman A is working under Kotaro's orders.
How can he be conveniently patrolling the streets every time the zombie girls try to escape the Kotaro mansion? In the first two episodes, would it just be a coincidence that he is there?
 * There's also the fact that as the girls try to escape, Kotaro briefly appears elsewhere, observing the scene. Directly takes Sakura back to the mansion in the first episode. And in the second episode, you see a photo of him just as the encounter with the three rappers ends.
 * If this were so I would not have to knock him out every time he is foolish

Kotaro is a time traveler of some kind.
This is how he was able to recover Yugiri's body in perfect condition despite the fact that she had been dead since the 19th century.

Kotaro is a kind of immortal who has been able to grab bodies before they were cremated. Edit
The most important question is what he is, with his insistence on keeping his sunglasses on at all times. Tae's archetype is currently unknown.
 * Some of them (especially Yugiri) died long before he was presumably born. Even for those who died during the life of Kotaro, the dead in Japan are usually kept only with dry ice to keep them reasonably cool for a few days until they are cremated according to Buddhist custom. There should be nothing left of them to zombify, unless their earthly remains were somehow transported through time and space before this could happen.

Kotaro is not a neurotypic
That is, Kotaro's serious moments are the result of someone around him involved in extreme emotional distress ... but at any other time, he doesn't feel the need to treat his emotions with respect. This implies that while he is aware of the concept of empathy, he does not know how to exercise it regularly, he only presents his deepest thought when absolutely necessary.

Something is wrong with the eyes of Kotaro
Many times in the media, when a character hides his eyes, even when they have no reason to hide them in private, it is because there is something significant in the eyes that the show does not want the public to know yet. Kotaro's eyes have not been seen at all in the series. While it could be argued that this is so Sakura doesn't recognize him as they knew each other when she was alive, he wears his glasses even when he's alone and he should have no reason to wear them. This includes when you bathe and write music on your own. Even his memory of when he was "Inui" makes an angle to hide his upper face, and once he finishes and takes off his glasses, the scene goes behind him so we can't see his face. So why go so far? Well again, presumably the series wants the audience to find out alongside Franchouchou, so we won't see what it looks like under those sunglasses until it's time. But what is under them? Well...:
 * Scar. A sufficiently distinctive scar could be a strong clue to Sakura that he was Inui, and he may not like to see the scars himself, so he hides them behind the glasses.
 * Magic Eye. Kotaro is ambiguously human, with comments from the bartender that he is older than he seems. It is possible to accept this, his eyes are quite different in appearance, possibly with black sclera or something like that, but in turn they make him seem inhuman. The fact that he didn't cover them in Inui's flashback in turn would imply that he didn't always have those eyes or that he felt uncomfortable letting Sakura see them.


 * Dead eyes. Kotaro could possibly be a zombie, revived by someone, or just functionally immortal. However, unlike the girls, their skin has not deteriorated, but their eyes have an inhuman feeling, and seeing them would be an obvious one he is not human.


 * World Controller. Kotaro is able to make the people who look through his eyes succumb to his wishes and do whatever he wants, he tried this with Sakura in episode 1, but he saw that the squid called more attention from the zombies