Beyond the Boundary - Recommendations

Alt title: Kyoukai no Kanata

If you're looking for manga similar to Beyond the Boundary, you might like these titles.

Shakugan no Shana

Shakugan no Shana

Sakai Yuuji thought he was a normal high school student, until one fateful day when time stopped. Watching in horror, he witnesses a monster devouring the "frozen" people around him; but luckily for Yuuji, he is saved by a sword-wielding red-headed girl that calls herself a "Flame Haze". The girl informs him that he has been dead for some time now and that his current self is merely a replacement for the human that he used be while alive. He is, she says, merely a torch whose life will come to an end when the blue flame in his chest ceases to burn. After this rude awakening, Yuuji realizes that he is able to see the flames of life in other "torches"; and after discovering that a friend of his is also a torch -- and her life is burning out faster than his – he gains the courage to live out the rest of his life with meaning. Will Yuuji be able to find his place in the world before he ceases to exist?

I agree

Isekai Tensei... Saretenee

Isekai Tensei... Saretenee

On the first day of high school, Yuuki Kousuke was killed while trying to help someone. However, that was not the end of his story. The old man he helped happened to be a god. As thanks, he lets Kousuke reincarnate into another world. He was overjoyed to live the life of those overpowered protagonists seen in his favorite isekai stories, however, when he came to, he found himself at the very same spot he died. This is the story of a protagonist living a peaceful life in the modern era with the cheat ability given to him by a god... not. The cat he ended up saving turned out to be a god too.

I agree

I Couldn't Become a Hero, So I Reluctantly Decided to Get a Job.

I Couldn't Become a Hero, So I Reluctantly Decided to Get a Job.

Raul Chaser wants to be the Hero famed for defeating the Demon Lord - at least, that used to be his dream, until another warrior beat him to the punch! With peace now restored and all Heroes out of commission, Raul reluctantly gets a job at Leon, a small store that sells magical commodities. Compared to slaying demons, Raul’s new life of greeting customers and working the register is uneventful at best - that is, until Fino Bloodstone, the Demon Lord’s busty daughter, is suddenly hired at the stop! Raul now faces a challenge more difficult than vanquishing her father: teaching the clumsy and ill-mannered Fino how to become a respectable employee, while simultaneously fending off tentacle monsters and putting up with pervy regulars’ skirt-flipping antics!

I agree

Shakugan no Shana (Light Novel)

Shakugan no Shana (Light Novel)

Sakai Yuuji thought he was a normal high school student, until one fateful day when time stopped. Watching in horror, he witnesses a monster devouring the "frozen" people around him; but luckily for Yuuji, he is saved by a sword-wielding red-headed girl that calls herself a "Flame Haze". The girl informs him that he has been dead for some time now and that his current self is merely a replacement for the human that he used be while alive. He is, she says, merely a torch whose life will come to an end when the blue flame in his chest ceases to burn. After this rude awakening, Yuuji realizes that he is able to see the flames of life in other "torches"; and after discovering that a friend of his is also a torch -- and her life is burning out faster than his – he gains the courage to live out the rest of his life with meaning. Will Yuuji be able to find his place in the world before he ceases to exist?

I agree

Aitsu, Isekai kara Kaettekitappoku ne?

Aitsu, Isekai kara Kaettekitappoku ne?

I agree

Puella Magi Madoka☆Magica: The Different Story

Puella Magi Madoka☆Magica: The Different Story

Mami's warm personality has made it difficult for her to adjust to her solitary life as a magical girl, where survival often takes precedence over kindness. When she meets Kyouko Sakura, a fellow lone wolf, she is excited at the prospect of working together with another magical girl and forging a friendship built on ultimate trust. But many are the sacrifices all magical girls must make, and the consequences of Kyouko's choice are only just becoming clear to her. When the pain becomes unbearable, will Kyouko remain standing beside Mami as a force for the greater good...?

I agree

Fate/Kaleid Liner Prisma Illya 2wei!

Fate/Kaleid Liner Prisma Illya 2wei!

After all the Class cards have been captured, Illiya and Myu are once again ordered by Rin and Luvia to help them stabilize the Earth's pulse, that went haywire when they started capturing the Class Cards. However, something goes wrong after the ceremony. Illiya tries to protect everyone from the destructive explosion. But when the explosion is averted, and seemingly everyone is safe... Illiya finds a clone of herself sitting beside her.

I agree

Class ga Isekai Shoukan Sareta Naka Ore dake Nokotta n desu ga

Class ga Isekai Shoukan Sareta Naka Ore dake Nokotta n desu ga

A god of a different world had abruptly appeared in Kamiya Yato's classroom and forcibly summoned the entire class to his world... except for him—because he was sleeping in a seat in the corner of the class, the round summoning magic circle didn't reach him—and he ended up staying here on Earth, but with brand-new skills. After he made it through a whole year full of police interviews and journalism reports, he finally became a high school student, but the quiet days he had hoped for were far from over—be it terrorists who decide to occupy his school or even monsters from different world, one by one new incidents take place in the town he lives in...Will a boy without any motivation be able to save the world?

I agree

Isekai Kaeri no Yuusha ga Gendai Saikyou! Inou Battle-kei Bishoujo wo Bishibashi Choukyou Suru Koto ni!?

Isekai Kaeri no Yuusha ga Gendai Saikyou! Inou Battle-kei Bishoujo wo Bishibashi Choukyou Suru Koto ni!?

Daiki Morishita, a normal high school boy was transported to a fantasy realm, where he ultimately defeats the Demon King. Having fulfilled his mission, he returns home, terribly missing his mother's home cooked meals. Upon his return home however, he discovers that he has brought something special back from the fantasy world.

I agree

Kikan Shita Yuusha no Gojitsutan

Kikan Shita Yuusha no Gojitsutan

In a fraction of a second, an university student, Kashiwagi Yuuya was summoned to another world and came back. Time didn’t pass in Japan, but Yuuya has completed the quest as a hero in another world and successfully returned. But to his surprise, he still retains his powers as a hero. Thus started the unordinary life of a hero in present day.

I agree