Common Knowledge: No, the name of the main protagonist matching with that of the hellstar is not the reason why people want her dead, though it is a factor as to why, as it is the reason she's famous. The hysteria surrounding Remina and Professor Oguro ultimately starts because of how the hellstar is targetting Earth, when it has been established that it could go anywhere, and Professor Oguro just so happened to get a Noble Prize for the discovery, and his daughter received stardom for the namesake. The fact that Oguro himself, the discoverer of the hellstar, couldn't really explain what the whereabouts surrounding it were, but also determined that the hellstar emerged from the wormhole the day his daughter was born, would certainly lead to some sort of suspicion from the more conspiracy-minded people in the crowd. Additionally, all the stuff about Remina being an avatar of the hellstar more or less came from the cult that killed the newscasters, who weren't even introduced until worldwide riots started occuring. By that point, people that are desperate enough to try and do what they can to survive in such a hopeless scenario are willing to believe anything.
Complete Monster: Naoya Goda is a repulsive cult leader who stands out as the story's most triumphant example of Humans Are Bastards. Amassing a huge following when the sentient planet Remina endangers the planet, Goda homes in on a young girl with the same name as the planet, ordering her—as well an innocent homeless man—sadistically tortured to death under the idea it will kill the Hellstar. When Remina spins the planet with its tongue, Goda convinces his flock to hurl themselves into the winds, resulting in thousands of deaths.
Germans Love David Hasselhoff: Junji Ito's mangas generally have a large Latin American following, this manga especially.
Inferred Holocaust: In the end, Remina (the planet) does devour the Earth. Only Remina (the person) and a handful of survivors manage to escape, but they are now stranded on a small spaceship in the middle of space with limited supplies and, due to the Earth having been destroyed, there is nobody left to rescue them and no safe place for them to reach before said supplies run out. Daisuke is at least optimistic, considering that them surviving at all was a miracle, and there's at least time for another to save them.
Moral Event Horizon: Goda, formerly the president of Remina's official fanclub and now the cult's leader, has reached this point while relishing in Remina's anguish, calling out both her dead father and manager.
When Remina opens its eyes, it's a horrific reveal that feels just plain wrong. When it opens its mouth, it looks like, as one character so eloquently put it, "A fat kid eyeing a donut!"
The entire sequence where Remina and co. are sent flying literally around the world after the Hellstar licks the planet. It's so ridiculous you can't help but laugh.
"It ate the fuckin' moon!"
They Wasted a Perfectly Good Character: People who read the manga often complain about its lead character, Remina Oguro, being a relatively flat character with no real character development beyond facing several trials of suffering and torture. Some feel that her celebrity status conflicting with her agency, along with her father being a scientist, could have been developed more
They Wasted a Perfectly Good Plot: Hellstar Remina is often considered to be one of Ito's weaker mangas, mostly due to its plot. Many people who have read this manga had felt that many of the ideas and characters presented in the book, while sounding good on paper, were never fully developed, and that the story probably should have been much longer to fix this problem. A lot can be done with an average teenage girl who gains stardom from a revolutionary discovery, and all of the horrific consequences that ensue. Unfortunately, the end result leaves a lot of loose threads and plotlines unanswered, an overall messy integration of both the human and planet scale events at once, and sloppy uses of symbolism.
Squick: Lots of this is to be expected, especially in the fourth chapter in the manga, where Remina is tortured mercilessly.
Values Dissonance: The bum calls the cult leader a homo, in a way that's supposed be an insult.
The Woobie: Remina. As if the malevolent Planet Eater bringing about the apocalypse wasn't enough, almost every survivor the poor girl meets wants to torture and kill her. It doesn't help that she never has any agency the entire time.
