If you're looking for manga similar to The Ones Within, you might like these titles.
Sumio has a very unique ability: he sometimes falls asleep and unconsciously writes premonitions into a 'Dream Diary.' And while his divinations are usually harmless, Sumio's life is changed forever when he accurately predicts his mother's disappearance in an elevator. Shortly after, he awakens at school along with a handful of others and is forced into a dangerous game by an unknown being named Enigma. Now, the group must use their special abilities to escape the building in the next 72 hours or suffer a cost more horrifying than they can imagine. Will Sumio manage to help unify the group and get everyone out alive?
Takada, an aspiring mangaka, is summoned to a mysterious plane of existence called the "Manga Coliseum" and forced to participate in a certain game.
A mysterious beautiful woman hosts a death match that results in either death or rebirth. Pitting an Expert who reaches the peak limit as a result from training against an Esper who awakens latent superpowers from within, the chosen players will bet on their lives with a fight to the death! There can be only one survivor...
"I want you to play a game. You don't have a choice in the matter. I will come for you soon" was written in a letter received by high school student Hitotsubashi Seiya who immediately threw it to the bin as a bad joke! How little did he know, soon after he found himself waking up in a sealed room with a bunch of strangers... all asking the same questions... where are they? Why are they there? And more importantly how will they get out?!
He has never been the type to stand out in the class. Kurihara Yuzuru has lived life by avoiding entering the lives of others, staying to himself. The story begins where he has to go to a whole new school, which means new classmates. He lacks any confidence to make new friends, so the fear of rejection drives him into a wish he never thought he would make. This single wish leads to a first day of class he would never forget. Yuzuru will have to make choices that will significantly alter others' lives, choices he could never make in the past.
Welcome to the classes of horror! I will be your guide to a world that lurks under everyday life. For these lessons, you don't need text books or notebooks. If you're prepared for the worst...
Puzzle fanatic Daimon Kaito has been crazy about solving brain teasers, puzzles and riddles his entire life. He attends the prestigious Root Academy with Nonoha, but spends most of his time creating and solving puzzles. Kaito is one of the few genius teenagers that attend the school who has been given the title Einstein, along with his other just as brilliant classmates who were given the titles Galileo, Edison and Da Vinci. Together, they attempt to solve a puzzle that, since its creation centuries ago, has never been solved. But the genius students soon realize that there are dangerous forces behind the impossible puzzle.
One day, when Hidaka Kishi is going to school with his close friend Kimiko, he notices a strange new song on his music player: "Who Killed Cock Robin?" Little does he know, a murderous game is beginning, with him as the target--the Cock Robin. Fourteen other players (called 'birds') are all competing to kill him, in exchange for making their wishes come true. However, one of the birds, Saedano Minami, seems to have other plans. To Hidaka's confusion, she decides to protect him, but what is her ultimate goal? How will Hidaka survive this deadly game?
In the underbelly of the corporate world, a secret series of battles takes place called the Bus Game, whose participants are solicited randomly via letters in the mail. During the games, teams of three attempt to take into their possession a disk filled with corporate secrets; the winners are given increasingly high cash rewards, while the losers get nothing - or worse, they lose their lives. Toki, Kazuo and Nobu make up the "no name" team, and their goal is to win one billion yen each. Each has a reason to need the money and a secret, disturbing past; but with high stakes and mysterious employers, they can only hope to leave the game alive.