Kirisaki Runo was caught up in the Heroes summoning and came to another world. As he was not the hero, he did not receive any special abilities. The only magic he could use was elementary magic which could at most create a light gust or ignite a small fire. He had received the world’s weakest job, elementary magician. Branded as useless by the inhabitants of the other world, Runo was not put down due to his optimistic character and had fun polishing his magic. Eventually, he discovered the secret nature of elementary magic—the freedom to create spells as one wished, and made up his mind to live through the other world with his ability! Source: AlphaPolis

The story depicts the serious competition in the world of professional competitive mahjong between the "digital" school, which believes only in efficiency and probability, and the "occult" school, which believes in its own theories of unknown scientific basis, and the main character Natsuki, who belongs to neither of these groups.

Corporate slave goes to another world, creates a restaurant in a dungeon, then gets hailed as history's strongest demon king as a result. Source: MU

The newest edition of Mahjong Primer, featuring all Katayama characters, teaches beginners how to go to a mahjong parlor by themselves and play mahjong. Features visually pleasing cartoons and easy-to-understand explanations. (Source: Kodansha, translated)

Sadameda Souta, a college student who is considered the unluckiest man in Japan, as he constantly draws the worst hands and tiles in every game —Gaining him the nickname of "Million Shanten Man"—, meets and consequently challenges a new student for a game, getting beaten as always. This new student's name is Meronhadake Momomi, a busty woman who has the best luck in mahjong. After this encounter, Momomi and Souta hang out together, playing mahjong sometimes, meeting all types of people, then later getting involved in affairs pertaining to the competitive mahjong world.

Usukage Yuu is almost like a ghost, with most people not being able to feel his presence at all; Yuu takes advantage of this in order to win a title in a mahjong tournament. However, there is one individual who is able to win against Yuu: a mysterious newcomer by the name of Tsukimi Shiruru. Now, as Yuu finds someone who can win against him, he begins to study under Shiruru's guidance. What is more important to win? Precise tactics or probability theory?

Kunieda Shunki was enjoying a smooth start to his high school life, despite dealing with his yandere-ish childhood friend, Miki Sayaka. However, one day, he gets teased about his relationship with Sayaka by his classmate Chisaki Yuki, who even goes so far as to try to kiss him. To make matters worse, Sayaka witnesses this whole scene and becomes enraged. The next morning, Shunki tries to clear up the misunderstanding but finds that Sayaka has somehow split into two! Now he’s caught between two jealous versions of Sayaka. Adding to the chaos, Shunki learns that Yuki’s gender has changed to male, leaving him utterly bewildered! As Shunki investigates this strange phenomenon, he discovers a connection to the legend of the "Everlasting Higanbana" at the temple where Yuki lives. He becomes captivated by the mysterious power of these flowers and finds himself entangled in a new-age love story with supernatural elements, centered around teenage boys and girls! (Source: Kodansha Lanove Bunko, translated)