The Demon King led his army of demons to wipe out the human race. The Hero, Kail, and his allies attacked the Demon King's castle to defeat the Demon King. The Demon King is slain, but at what cost? Kail lost all of his allies throughout the war. Friends, family, lovers, comrades. All dead, and he is dying.
As Kail's life ebbs away in the Demon King's chamber, he notices a strange gem that the Demon King had coveted and approaches this relic to grab it; after an intense light glows, he is sent years into the past. After recovering from the initial shock, now in his younger body, he decides to avoid making the same mistakes of his first time through these years and to become stronger.
Tsuyokute New Saga has finished publishing and it has 107 Chapters. It is also Known as: 強くてニューサーガ, Be Stronger! New Saga
Genres: Magic , Harem , Fantasy , Adventure , Time Travel , Fantasy World , Action , Demon , Juujin , Romance , Comedy , Drama
Try our anime quiz: Anime Characters Guessing Quiz/Game
Top 5 Manga Like Tsuyokute New Saga [2026 List]
5. Kichiku Eiyuu
10 years since he reincarnated in hell... Takamichi is troubled. With his power as an “Incubus” allowing him to become stronger by having sex with women, he had reached the peak of his growth. “I’ll move to a new area, wait for me beautiful women of the new world!” Sexy & violent pretty girl battle fantasy!
Savage Hero is currently publishing and has Chapters. It is also Known as: 鬼畜英雄, Incubus of Frustration, Kichiku Hero, 귀축 영웅
4. Maou-sama, Retry!
What do you do when the MMO you’ve run for 15 years comes to an end? Akira Ono didn’t get much of a choice — he woke up trapped inside the world of his own game in the body of his in-game character: the Demon Lord. With an outcast child as his sidekick, he tries his best to survive the cruel fantasy world of his own creation, prosecution from the good guys, and of course, the final boss.
Source: J-Novel Club
Demon Lord, Retry! has finished publishing and it has 25 Chapters. It is also Known as: 魔王様、リトライ!, 마왕님 리트라이!
3. Tsuyokute New Saga
The Demon King led his army of demons to wipe out the human race. The Hero, Kail, and his allies attacked the Demon King's castle to defeat the Demon King. The Demon King is slain, but at what cost? Kail lost all of his allies throughout the war. Friends, family, lovers, comrades. All dead, and he is dying.
As Kail's life ebbs away in the Demon King's chamber, he notices a strange gem that the Demon King had coveted and approaches this relic to grab it; after an intense light glows, he is sent years into the past. After recovering from the initial shock, now in his younger body, he decides to avoid making the same mistakes of his first time through these years and to become stronger.
Tsuyokute New Saga has finished publishing and it has 107 Chapters. It is also Known as: 強くてニューサーガ, Be Stronger! New Saga
2. Nidome no Jinsei wo Isekai de
All of a sudden, out of nowhere. "Renya Kunugi, you have passed away!" So said the young girl who styled herself God. Apparently, Renya Kunugi the protagonist had lived long and prospered. His life already came to a peaceful and fulfilling end, but at the request of Her Holiness, he was transported to an alternate world to start a new life as a young man. Thus did Renya, who was definitely your average everyday guy, end up fighting off bandits and vanquishing monsters. Eventually, after his successively blossoming talents coalesce into a force of sheer awesomeness, he will go on to leave his mark upon this alternate world.
Note: Includes 6 extra chapters.
Second Life in Another World has finished publishing and it has 55 Chapters. It is also Known as: 二度目の人生を異世界で, [New Life+] Young Again in Another World
1. Mato Seihei no Slave
When entrances to a different dimension known as the "Mato" emerge all over Japan, a new resource known as "Peaches" are discovered which give unique abilities only to women. However, dangerous monsters called "Yomotsu Shuuki" also roam throughout the Mato and have been responsible for various disasters ever since. To combat the Yomotsu Shuuki, the government formed the Anti-demon Corps, an elite group of women who have received power from the Peaches.
One day, a high school student named Yuuki Wakura was walking home from school when he suddenly gets lost in a Mato entrance. When he calls for help, he is immediately rescued by Kyouka Uzen, the chief of the Seventh Unit of the Anti-demon Corps. Recognizing his potential while also needing him to make her Peach power more effective, she ask that Yuuki join the Anti-demon Corps by becoming her slave, a position he might find more enjoyable than he initially would have thought..
Chained Soldier is currently publishing and has Chapters. It is also Known as: 魔都精兵のスレイブ, Slave of the Hell Soldiers, Matoseihei no Slave