BookWalker has revealed the ranking for the bestselling series of the first half of 2026. The rankings were published on August 18, 2026, and are based on e-book sales figures from the online BookWalker store during the period from January 1, 2026, to June 30, 2026.
The 15 top-selling series on BookWalker are as follows:
1. That Time I Got Reincarnated as a Slime (Light Novels)
- LABEL: Yen On
- PUBLISHER: Yen Press
- ARTIST: Mitz Vah
- AUTHOR: FUSE
Lonely thirty-seven-year-old Satoru Mikami is stuck in a dead-end job, unhappy with his mundane life, but after dying at the hands of a robber, he awakens to a fresh start in a fantasy realm…as a slime monster! As he acclimates to his goopy new existence, his exploits with the other monsters set off a chain of events that will change his new world forever!
Read That Time I Got Reincarnated as a Slime (Light Novels) on BookWalker TODAY with 25% Coin back until August 20, 2026 at 11:59 PM PDT!
2. Witch Hat Atelier
- PUBLISHER: Kodansha
- ARTIST: Kamome Shirahama
In a world where everyone takes wonders like magic spells and dragons for granted, Coco is a girl with a simple dream: She wants to be a witch. But everybody knows magicians are born, not made, and Coco was not born with a gift for magic. Resigned to her un-magical life, Coco is about to give up on her dream to become a witch…until the day she meets Qifrey, a mysterious, traveling magician. After secretly seeing Qifrey perform magic in a way she’s never seen before, Coco soon learns what everybody “knows” might not be the truth, and discovers that her magical dream may not be as far away as it may seem…
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3. Reborn as a Space Mercenary: I Woke Up Piloting the Strongest Starship! (Light Novels)
- PUBLISHER: Seven Seas Entertainment
- ARTIST: Tetsuhiro Nabeshima
- AUTHOR: Ryuto
When Satou Takahiro is swept away from his ordinary life into the world of his favorite video game, a universe of space battles, interstellar colonies, and danger in the vastness of outer space awaits. Soon, he’s living as “Hiro” the mercenary, with a tricked-out spaceship and a babe on each arm! There are space pirates to fight, girls to rescue, and trouble to get into (and hopefully out of). Hiro is going to live his new life to the fullest!
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4. Re:ZERO -Starting Life in Another World- (Light Novels)
- LABEL: Yen On
- PUBLISHER: Yen Press
- ARTIST: Shinichirou Otsuka
- AUTHOR: Tappei Nagatsuki
Subaru Natsuki was just trying to get to the convenience store but wound up summoned to another world. He encounters the usual things–life-threatening situations, silver haired beauties, cat fairies–you know, normal stuff. All that would be bad enough, but he’s also gained the most inconvenient magical ability of all–time travel, but he’s got to die to use it. How do you repay someone who saved your life when all you can do is die?
Read Re:ZERO -Starting Life in Another World- (Light Novels) on BookWalker!
5. Ascendance of a Bookworm (Light Novels)
- PUBLISHER: J-Novel Club
- ARTIST: You Shiina
- AUTHOR: Miya Kazuki
A certain college girl who’s loved books ever since she was a little girl dies in an accident and is reborn in another world she knows nothing about. She is now Myne, the sickly five-year-old daughter of a poor soldier. To make things worse, the world she’s been reborn in has a very low literacy rate and books mostly don’t exist. She’d have to pay an enormous amount of money to buy one.
Read Ascendance of a Bookworm (Light Novels) on BookWalker!
6. The Apothecary Diaries (Manga)
- PUBLISHER: SQUARE ENIX
- AUTHOR: Natsu Hyuuga
- ARTIST: Nekokurage
- COMPILATION: Itsuki Nanao
- DESIGNER: Touco Shino
Maomao, a young woman trained in the art of herbal medicine, is forced to work as a lowly servant in the inner palace. Though she yearns for life outside its perfumed halls, she isn’t long for a life of drudgery! Using her wits to break a “curse” afflicting the imperial heirs, Maomao attracts the attentions of the handsome eunuch Jinshi and is promoted to attendant food taster. But Jinshi has other plans for the erstwhile apothecary, and soon Maomao is back to brewing potions and…solving mysteries?!
[Slow Life Special: Up to 50% OFF & 25% Coin Back]Read The Apothecary Diaries (Manga) on BookWalker TODAY with 50% OFF Volume 1 and 25% Coin back on subsequent titles until August 20, 2026 at 11:59 PM PDT!
7. This Is Screwed Up, but I Was Reincarnated as a GIRL in Another World!
- PUBLISHER: Seven Seas Entertainment
- ARTIST: Keyaki Uchiuchi
- AUTHOR: Ashi
Ren, a young orphan girl, has been sold off to a merchant with sinister plans for her. Suddenly, memories of her past life on a world called Earth come flooding back, and Ren remembers that she used to be a research scientist–and a grown man! As Ren escapes into the Dark Forest, magical powers awaken within her. In order to survive the harsh realities of this world, she must use her rekindled knowledge of Earth’s science as well as her newfound powers! Will her magical cheat powers and past-life knowledge be enough to keep her freedom, or is she doomed to a life of servitude?
[Isekai: UP TO 35% COIN BACK]Read This Is Screwed Up, but I Was Reincarnated as a GIRL in Another World! on BookWalker TODAY with 25% Coin back until August 20, 2026 at 11:59 PM PDT!
8. That Time I Got Reincarnated as a Slime (Manga)
- PUBLISHER: Kodansha
- ARTIST: Taiki Kawakami
- AUTHOR: FUSE
As players of Monster Hunter and Dungeons & Dragons know, the slime is not exactly the king of the fantasy monsters. So when a 37-year-old Tokyo salaryman dies and wakes up in a world of dragons and magic, he’s a little disappointed to find he’s become a blind, boneless slime monster. Mikami’s middle age hasn’t gone as he planned: He never found a girlfriend, he got stuck in a dead-end job, and he was abruptly stabbed to death in the street at 37. So when he wakes up in a new world straight out of a fantasy RPG, he’s disappointed but not exactly surprised to find that he’s not a knight or a wizard but a blind slime demon. But there are chances for even a slime to become a hero…
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9. Mushoku Tensei: Jobless Reincarnation (Light Novels)
- PUBLISHER: Seven Seas Entertainment
- ARTIST: Shirotaka
- AUTHOR: Rifujin na Magonote
Kicked out by his family and wandering the streets, an unemployed 34-year-old shut-in thinks he’s hit rock-bottom–just as he’s hit and killed by a speeding truck! Awakening to find himself reborn as an infant in a world of swords and sorcery, but with the memories of his first life intact, Rudeus Greyrat is determined not to repeat his past mistakes. He’s going to make the most of this reincarnation as he sets off on the adventure of a second lifetime!
[Isekai: UP TO 35% COIN BACK]Read Mushoku Tensei: Jobless Reincarnation (Light Novels) on BookWalker TODAY with 25% Coin back until August 20, 2026 at 11:59 PM PDT!
10. Reincarnated as a Sword (Light Novels)
- PUBLISHER: Seven Seas Entertainment
- ARTIST: Llo
- AUTHOR: Yuu Tanaka
Reincarnated as a sentient weapon with memories of his past life, but not his name, a magical sword saves a young beastgirl from a life of slavery. Fran, the cat-eared girl, becomes his wielder, and wants only to grow stronger, while the sword wants to know why he is here. Together, the strange duo’s journey has only just begun!
[Isekai: UP TO 35% COIN BACK]Read Reincarnated as a Sword (Light Novels) on BookWalker TODAY with 25% Coin back until August 20, 2026 at 11:59 PM PDT!
11. Ascendance of a Bookworm (Manga)
- PUBLISHER: J-Novel Club
- ARTIST: Suzuka, Ryo Namino, Hikaru Katsuki
- AUTHOR: Miya Kazuki
A certain college girl who’s loved books ever since she was a little girl dies in an accident and is reborn in another world she knows nothing about. She is now Myne, the sickly five-year-old daughter of a poor soldier. To make things worse, the world she’s been reborn in has a very low literacy rate and books mostly don’t exist. She’d have to pay an enormous amounts of money to buy one. Myne resolves herself: If there aren’t any books, she’ll just have to make them! Her goal is to become a librarian. This story begins with her quest to make books so she can live surrounded by them! Dive into this biblio-fantasy written for book lovers and bookworms!
Read Ascendance of a Bookworm (Manga) on BookWalker!
12. Chained Soldier (Manga)
- PUBLISHER: Yen Press
- ARTIST: Yohei Takemura
- AUTHOR: Takahiro
Decades ago, gates to an otherworldly and dangerous dimension known as Mato-the “Demon City”-appeared across Japan. Those who partook in the “peaches” growing there gained unique abilities-but only if they’re girls. When down-in-the-dumps high school boy Yuuki Wakura finds himself caught up in a gate, he’s saved by Kyouka Uzen, the beautiful commander of the 7th squad of the Demon Defense Force, who…orders him to become her slave?!
[Isekai: UP TO 35% COIN BACK]Read Chained Soldier on BookWalker TODAY with 25% Coin back until August 20, 2026 at 11:59 PM PDT!
13. Wistoria: Wand and Sword
- PUBLISHER: Kodansha
- ARTIST: Toshi Aoi
- AUTHOR: Fujino Omori
Will Serfort dreams of keeping his promise to a childhood friend by becoming a Magia Vander, one of the mighty magicians who sit atop the Wizard’s Tower. However, he is unable to cast even the simplest of spells, leaving him to fight dungeon monsters to earn credits at Regarden Magical Academy. As if that weren’t enough, he finds himself putting his sword skills to the test against a bullying professor!
Read Wistoria: Wand and Sword on BookWalker!
14. Reincarnated as a Dragon Hatchling (Light Novels)
- PUBLISHER: Seven Seas Entertainment
- ARTIST: NAJI Yanagida
- AUTHOR: Necoco
Our hero wakes up one day in a brand new world…but his new life doesn’t come with fighting skills or magic powers, or even arms and legs! He’s reborn as a helpless egg, stuck in an unfamiliar forest surrounded by terrifying, hungry beasts. But eggs hatch, hatchlings grow up, and humble beginnings can lead to something great. He’ll do his best to become the strongest dragon ever, and no measly shell will get in his way!
[Isekai: UP TO 35% COIN BACK]Read Reincarnated as a Dragon Hatchling (Light Novels) on BookWalker TODAY with 25% Coin back until August 20, 2026 at 11:59 PM PDT!
15. Secrets of the Silent Witch (Light Novels)
- LABEL: Yen On
- PUBLISHER: Yen Press
- ARTIST: Nanna Fujimi
- AUTHOR: Matsuri Isora
Monica Everett, the Silent Witch, is the only mage in the world who can use unchanted magecraft, a true hero who singlehandedly defeated a legendary black dragon. However, this young genius is actually…super-duper shy! That’s right: She learned to cast spells silently just to avoid speaking in public, and despite her power, she has zero self-confidence. Now Monica has been tasked with secretly guarding the second prince. Can she keep it together as she faces both the evil forces targeting the prince and the terrors of social
Read Secrets of the Silent Witch (Light Novels) on BookWalker!
Source: Press Release
