Azusa Kannawa, ace of the publicity department, is known for her unmatched reliability. Her coworkers, on the other hand, find her no-nonsense demeanor intimidating. Yet, unbeknownst to them, a socially awkward woman hides underneath the facade, simply struggling with casual communication and masking it with a strong attitude. However, her mask begins to crack when a promising rookie, Yuu Kamegawa, joins the team and Azusa gets assigned as his mentor. Determined to guide Kamegawa just like how her senior once trained her, Kannawa puts utmost effort into showing him the ropes. But as they grow closer, she slowly lowers her guard, gradually revealing that the seemingly rigid department ace might actually be far kinder than anyone initially thought.

Throughout his youth, unskilled healer Laust was taken advantage of by unscrupulous adventurers. Despite intensive efforts to improve himself, Laust is swindled by the members of Blades of Lightning—the first party that he joins after completing his training—and is eventually banished by its leader Margulus. As the subject of public ridicule, Laust is not hopeful about his future prospects. However, novice adventurer Narsena unexpectedly offers to form a party with him, and he happily accepts. The duo quickly gain fame by conquering uncharted parts of the labyrinth. While there seems to be a reason behind Narsena's hasty proposal, Laust is oblivious to what it could be. Meanwhile, Margulus fails for the second time to slay a poisonous hydra, even after enlisting the help of elite healer Lyra for the quest. Laust soon finds himself being asked to rejoin Blades of Lightning, but it is not as easy as he imagined to move on from his former comrades-in-arms despite his new path and current companion.

The story takes place in Japan. The year is 2030 and Earth has been completely overrun by a viral disease named Gibia that turns infected people into various different monsters, based on their age, sex, and race. A samurai and a ninja from the early Edo period travel together through time and arrive in a ruined Japan to aid a professor working on a cure for the virus. Together, they fight countless Gibia monsters, outlaws, and other fierce foes on their journey to save mankind.

There was once a man who was summoned to another world, and saved it. Of course, he became too popular there, and turned into an isekai-normie. However, that man fell into a trap and was forcibly returned to his original world. Moreover, he had to start over as a baby! This is the story of the way-too-fantastic ex-hero who lived as a gloomy high-schooler, as he gets summoned once again to that same other world in a very unexpected development! (Source: Coolmic, edited)