The Red Ranger, Tougo Asagaki, finds himself transported to another world in the middle of a fierce battle against forces of evil. Upon arriving, he quickly makes a name for himself as an adventurer and takes on a job from a young mage named Yihdra Arvoln. With his eccentric powers and frenzied personality, Tougo blazes through the mission with her. After the quest, Tougo and Yihdra begin adventuring together with their respective goals. Tougo strives to help as many as possible in the new world and find a way back home, while Yihdra desires to redeem her family lineage of mages and make magic accessible to everyone. Along their journey, the duo discover the limitations yet endless potential of the bonds they forge as they overcome adversities to achieve their aspirations.

For more than 30 years, Dariel has been a loyal soldier in the Demon King's army, having been raised by Granverza, one of the Four Heavenly Generals. However, as Dariel lacks any magical potential, he is nothing but a disgrace in the eyes of Granverza's son, Bashubaza, who fires Dariel right after assuming his father's position as a general. Stripped of a home and a job, Dariel wanders the forests, where he stumbles upon a human girl named Marika running from a monster. After Dariel intervenes to help Marika, she invites him to stay at her village in return. There, he discovers that the reason he has zero suitability for magic as a demon is that he is, in fact, a human. However, Dariel is no ordinary human. Possessing potential that far outweighs even heroes, Dariel may soon find himself involved in the humans and demons' seemingly never-ending conflict, facing against the race he once considered allies.

Hayase Nagatoro and Naoto Hachiouji have grown closer: the girl spends more time than ever in the art club room with her senpai. Although he is always on edge, Naoto no longer seems to mind Nagatoro's presence. Time and again, Naoto demonstrates his hidden, cool demeanor, and Nagatoro displays her possessive tendencies. However, they still can not seem to completely close the distance between them. It is clear to everyone else that the pair have feelings for each other. For Nagatoro, there is nothing more entertaining than toying with Naoto. But as the girl shows no plans to stop teasing her senpai, it is only a matter of time before they realize how they truly feel.

In the kingdom of Girtonia, the Adenauer family has been giving birth to saints for centuries. Two sisters form the newest generation of holy women who protect the lands from monsters and calamities. The eldest, Philia, is considered a prodigy in the field, capable of solving any problem in no time. Meanwhile, the youngest, Mia, is not as extraordinary as her older sister but has charmed the entire country with her lovely personality. Despite their striking differences, Philia and Mia share an unbreakable bond. Sadly, Mia is the only person who truly cares for Philia. Because of Philia's expressionless face and aloof demeanor, their parents always scold her, and the citizens complain about her. Moreover, Julius Girtonia, the second prince and Philia's fiancé, would rather have a more amicable girl as his wife-to-be. For that reason, he cancels the engagement and sells Philia off to the neighboring kingdom, Parnacorta, which has recently lost its own saint. Having no say on the matter, Philia immediately goes to serve Parnacorta. As a foreigner, she presumes that she will not be treated much better than in Girtonia. Contrary to her expectations, Philia might have finally found a place with people worth smiling for.