Genre - Seinen

When timid eleventh-grader and math genius Kenji Koiso (Ryunosuke Kamiki) is asked by older student and secret crush Natsuki (Nanami Sakuraba) to come with her to her family’s Nagano home for a summer job, he agrees without hesitation. Natsuki’s family, the Jinnouchi clan, dates back to the Muromachi era (1336 to 1573), and they’ve all come together to celebrate the 90th birthday of the spunky matriarch of the family, Sakae. That’s when Kenji discovers his “summer job” is to pretend to be Natsuki’s fiance and dance with her at the birthday celebration. As Kenji attempts to keep up with Natsuki’s act around her family, he receives a strange math problem on his cell phone which, being a math genius, he can’t resist solving. As it turns out, the solution to the mysterious equation causes a bizarre parallel world to collide with Earth, and it’s up to Kenji and his new fake family to put reality back in order. Source - Twitch

A spin-off story focuses Kazuma Ikezawa (King Kazuma), Natsuki Shinohara's cousin, as he battles his way in the Oz Martial Art Competition.

Ken, a young Japanese guy, is in love with a young Korean girl Yumin. He followed her in Korea and wants to become a policeman just like her. But then, he finds himself at the head of a local gang. What will happen to Ken?

Sundome is the story of an apathetic young man whose dull existence is forever changed when an assertive young woman wants to join the same after-school club in which he is a member. If only all after-school clubs were as hands on as this!

The story of an orphanage, the children who live in it, and the beat-up old Nissan Sunny 1200 which provides them with a means of escape from their boring everyday lives.

The story takes after Tachibana Misaki, a 15-year-old young lady who's tormented at school. In her mission to wind up more grounded, she chooses to enter the reprobate way, going for a shinny tomorrow.

Sasaki, a salaryman who is overworked, goes through a typical day of stress just to see one light at the end of the tunnel: Yamada, the consistently happy agent at his #1 general store. Sasaki spends an extra few minutes at a company meeting one day, and by the time he reaches the convenience store, Yamada has already finished his shift. But as he heads out, he sees a young woman smoking behind the store who has piercings? In Big Gangan, official serialization began in August 2022. Following the tankobon release, the name is Super no Ura de Yani Suu Futari.

Shirakawa Ro has to move to a relative’s town in the country side with his twin sister Haruna when their mother suddenly dies in a car accident. Left as orphans at the age of 15, the two have to deal not only with their only parent but an entire new environment. Ro was supposed to succeed his mom’s dream of winning a medal in the Olympics but with her dying the day before the big event, Ro breaks down and misses his only chance to reach his dream. Now stuck in the small town of Tomakomai, Ro finds a new passion in ice hockey and regains his focus in life.

"The planet will be filled with cries of agony and slaughter when the end of the world arrives. All that will be left in the end are ashes." His entire existence has been spent imprisoned beneath the earth. He is unaware of his name. He is unaware of the exact time or whether the world will end at all. All he knows is that he is being put in jail—by his own father.

From author's site: "I (the term 'boku' is used, indicating that the narrator is a male teenager) love math. Just after the high school entrance ceremony I meet a beautiful girl, Milka. Milka is a mathematical genius. She gives me many math problems and shows me many elegant solutions. Milka and I spend a long time discussing math in the school library. A year later I meet another mathematical girl, Tetra. Tetra is one year younger than me, and asks me to teach her math. While I teach her, she begins to understand math and to love its elegance gradually." In the first volume (series), we talk about Fibonacci Numbers, Harmonic Numbers, Finite and Infinite Sums, Factorization, The Bazel Problem, Partitions of the Integer, and Generating Functions.

After reaching the sixth floor of Aincrad, Asuna and Kirito discover that the town of Stachion is home to strange puzzles that are hidden everywhere. There are plenty of intricate puzzles and mysteries ahead that call for more than just a sword to solve. The two must work together despite the overwhelming odds if they hope to escape alive. Will they be prepared for the evil forces that wait to be encountered, though, as they concentrate on facing the trials that lie ahead?

Seigi, a martial arts trained middle schooler, often feels driven to protect the weaker people around him. One day, he defends a homeless man against some punks, and the man gives him a strange tattoo on his palm in return. The tattoo is a secret weapon produced in the arms race between America and the Serinistan Kingdom. Seigi finds himself in over his head when a powerful girl, using the same secret weapon, violently pursues him in order to retrieve it. His skill at martial arts may not be enough to keep him alive, but will he be able to learn how to trigger the power of his tattoo in time? [tethysdust]

Kamiwazumi Jun lives alone in an old house with a sanctum. Subsequently, individuals now and then go out, similar to little cats... or then again an oblivious bare young lady?! The lady being referred to cases to be a robot from the future who has returned time to ensure Jun, the future savior. She has no misgivings about nakedness, and recovers helpful articles from a "ninth dimensional pocket" between her legs. Once Jun has acknowledged that her story must be valid, he additionally needs to make sense of how to function an attractive robot young lady into his regular day to day existence, which likewise incorporates disclosing her to an adorable beloved companion that really likes him.

Early one New Year's morning, rounin samurai Senou Souichirou sets foot in Edo's Katagi tenements. Though he appears to be a cheerful and well-mannered man, the inhabitants of the tenements initially regard him with fear and suspicion. Kankichi, a carpenter's son, thinks that he is not human; the neighbourhood cats converse about how "that man reeks of blood". Ignoring the hostile reception, Souichirou pawns his sword, inserts a bamboo replica into the sheathe at his waist, and settles down to a seemingly normal life in the village. He befriends Kankichi and earns the trust of both children and adults alike; soon becoming the new school-teacher. Months pass, and all appears to be well. But Souichirou knows that wherever he may go, trouble and disaster will invariably follow...