In the books, the titular Grandma seeks to explore the true meaning of the Japanese phrase "mottainai" after her son asked her what it meant and she couldn't answer. "Mottainai" is a commonly used exclamation that roughly translates to "what a waste!", expressing regret over wastefulness. The Grandma seeks to explore the meaning and importance of "mottainai" in the story.
The main story is the vast Jiang Dynasty in the territory, the sword road culture has been passed down for thousands of years, and the people are proud to practice the sword. However, few people who can successfully cultivate the "sword god" to the peak state are few. More than a decade ago, the limelight of the infinite sword god was severely damaged by the design of the eternal sword god, and since then, it has been living in the mountains and forests, and nothing has happened.
Rishe, the duke’s daughter, is no stranger to reincarnation—it’s her seventh life, after all. Each life restarts at her broken engagement. Having been a merchant, a maid, and a knight, she now desires leisure. But her world changes when a prince, who killed her in a past life, proposes! To prevent war and live to a ripe old age, she begins her seventh life as the bride of an enemy nation’s prince.
Awakening her dormant abilities as a devil one day, Yuuko Yoshida aka Shadow Mistress Yuuko, is entrusted with the mission to defeat the Light clan's shrine maiden, a magical girl, by her ancestor Lilith. Yuuko meets magical girl Momo Chiyoda through her classmate Anri Sada, and challenges her to a duel, but loses quickly due to her lack of strength. Since then, Yuuko has struggled with her role as a devil and her duel with Momo, and borrowed help from her regularly. However, by a strange coincidence, Yuuko also weakens Momo by taking away her power to cooperate in protecting the peace of Tama city.
Just when Masato thought that a random survey conducted in school was over, he got involved in a secret Government scheme. As he was carried along with the flow, he ended up in a Game world! As if that wasn't enough, shockingly, his mother was there as well! It was a little different from a typical transported to another world setting, but after some bickering, "Mom wants go on an adventure together with Maa-kun. Can mom become Maa-kun's companion?" With that, Masato and Mamako began their adventure as a mother and son pair. They met Porta, a cute traveling merchant, and Wise, a regrettable philosopher. Along with their new party members, Masato and co. start on their journey.
For a thousand years, the Vikings have made quite a name and reputation for themselves as the strongest families with a thirst for violence. Thorfinn, the son of one of the Vikings' greatest warriors, spends his boyhood in a battlefield enhancing his skills in his adventure to redeem his most-desired revenge after his father was murdered.
Worried about her reputation, Hime covers shifts for a cafe manager she accidentally injures to maintain her picture-perfect princess image. But this cafe has a peculiar theme—private school. To put on her best barista schoolgirl act, she’ll be trained by the most graceful girl there, Mitsuki. Under her guidance, Hime’s feelings start to brew, but there’s just one problem—Mitsuki can’t stand her!
Gabriel, an ordinary boy who has just moved from London to the countryside, is bored and misses the friends he left behind. He gazed out the window, as if wanting to escape from it all... until something strange caught his attention: mysterious smoke rising from the woods near his house. As he follows it to investigate, his world becomes intertwined with the hidden world of mages.
Nana Osaki and Nana Komatsu meet while traveling to Tokyo in pursuit of their respective dreams, and decide to be roommates. Although drastically different people, the two become very close and together they find out if their biggest dreams have room for their best friend.
First year high schooler Junta Shiraishi is a mob character who goes unnoticed even when he's standing right next to you. But his classmate, "heroine-level beauty" Kubo, always notices him and is there to tease him. Anyone can become special to someone, but it might be a little too early to call these feelings "love." Perhaps this story is still two-steps from being a romantic comedy--let's call it a sweet comedy where a background character becomes visible!
Dale is a cool, composed, and highly skilled adventurer who's made quite a name for himself despite his youth. One day on a job deep in the forest, he comes across a little devil girl who's almost wasted away. Unable to just leave her there to die, Dale takes her home and becomes her adoptive father. Devil or not, Latina is beyond adorable, and the adventurer soon finds himself head over heels with being a parent. But why was she out in the forest to begin with, and why does she carry the mark of a criminal?
Yui Mitsuya and Masugu Tateishi aren't just any coworkers—they totally have the hots for each other. His helpful yet humble attitude makes her giddy, and her cuteness leaves him grinning like a fool. Problem is, they're trying to keep their new relationship under wraps to avoid making things awkward at work. But seeing how they can't keep their hands off each other, they run the risk of spilling their little secret with each passing day at the office.
Teenager Asumu Adachi is at a crossroads. He's about to start high school and unsure of what he wants to do with his life. And as if puberty & homework weren't bad enough, he stumbles upon a huge secret: his new friend Hibiki is secretly an oni! Hibiki & his oni comrades are the only thing stopping the monstrous Makamou from devouring mankind. As Asumu is pulled into a secret war, Hibiki & his allies teach the teenager what it means to be an adult in a uncertain world.
On a rainy day, Fuji meets a cute critter posing as a dog and offering an umbrella and a cue card that says, “Please take me home,” and she can’t resist. With this dog-poster’s quirky charm and mysterious ways, life together becomes a heartwarming adventure of friendship and shared seasons.
There’s something really strange about the maid I just hired! No normal person could be so beautiful, or cook such amazingly delicious food, or know exactly what I want before I even ask. She must be using magic—right, a spell is the only thing that can explain why my chest feels so tight whenever I look at her. I swear, I’m going to get to the bottom of what makes this maid so...mysterious!
光临地球
A caveman forms a bond with a dinosaur as they struggle to survive in a hostile world.
She can see dead people…she just chooses to ignore them. That’s Miko’s plan, anyway, with horrifying (and sometimes hilarious) results.
At dusk regular customers flock in the little Nagoya shop "Tora and Mike" to wash away with sake, a delicious array of food and resounding laughter the hardships of the day. A culinary journey into traditional Japanese home cooking.
Six friends are transported into the Dungeons & Dragons realm and must try to find a way home with the help of their guide 'Dungeon Master'.