Violence, name-calling, and humiliation are a daily reality for high school student Park Hyung Suk. Chubby and insecure, he is often used as a plaything and punching bag for bullies, which leads him to wish he could just disappear. Unexpectedly, when he transfers schools in the hopes of starting anew, a miraculous opportunity emerges: he awakens in a tall, handsome, and strangely athletic body. Hyung Suk quickly realizes that he is now the owner of two disparate bodies; when one falls asleep, he wakes up in the other. Feeling like he has won the lottery of life, Hyung Suk enters his new school as this attractive and strong young man. However, it soon becomes evident that being a popular student is not all smooth sailing. From girls wanting him only for his good looks to delinquents picking fights out of jealousy, he can never seem to escape trouble. In trying to balance his two different lives, Hyung Suk may find both of them to be sources of ceaseless challenges.

For centuries, Heaven has required its young angels to live and study among humans in order to become full-fledged angels. This is no different for top-of-her-class Gabriel White Tenma, who believes it is her mission to be a great angel who will bring happiness to mankind. However, Gabriel grows addicted to video games on Earth and eventually becomes a hikikomori. Proclaiming herself a Fallen Angel, she is apathetic to everything else—much to the annoyance of Vignette April Tsukinose, a demon whom Gabriel befriended in her angelic early days on Earth. Vignette's attempts to revert Gabriel back to her previous self are in vain, as Gabriel shoots down any attempt to change her precious lifestyle. As they spend their time on Earth, they meet two eccentric personalities: the angel Raphiel Ainsworth Shiraha, Gabriel's classmate with a penchant for sadism, and the demon Satanichia McDowell Kurumizawa, a clumsy self-proclaimed future ruler of the Underworld. Gabriel DropOut follows these four friends' comedic lives as they utterly fail to understand what it truly means to be a demon or an angel.

In ancient times, saints fought for hegemony. A young man known as the Sleeping God turned out to be a blessing in disguise and opened up a heaven-defying skill. From then on, a genius with unparalleled physical strength dominated the world, slashed the stars with his sword, and thousands of geniuses crawled and trembled under his feet. In a world where heroes are rising, I am the only one who dominates. (Source: Youku, translated)

After falling asleep while playing an online game, a man wakes up and finds himself transported to that game's world as his in-game character, Arc. He wastes no time adjusting to his new environment, but soon realizes that he is using the skeleton avatar he chose when creating his character, which forces him to hide his visage to avoid unwanted attention. Arc goes to the nearby castle town of Luvierte, hoping to become an adventurer and take on quests to earn money. With his overpowered abilities, Arc embarks on a fantastical journey—exploring diverse territories, looting various monsters, and helping people get out of sticky situations. However, his seemingly innocuous actions may soon involve him in a brewing large-scale conflict that will forever alter the fate of the realm.