Since I've been reincarnated into my beloved novel, I'll spare no effort to save my favorite character from danger!
To ensure they live a brilliant life, I'll cut down villains and even twist fate itself!
So please be happy, my dear brother!
―――And yet, I'm the Final Boss.
[Main Story Completed] [Available on Kakuyomu]
*Heavily leans towards serious themes.
| Published | Title | # |
|---|---|---|
| 2016/01/17 20:51 | Memories of the Sunshine | 28 |
| 2015/05/11 17:00 | "Goodbye, brother." | 27 |
| 2015/05/10 15:38 | World Changer | 26 |
| 2015/04/19 17:04 | The man who changed the world | 25 |
| 2015/03/03 22:24 | Penitent | 24 |
| 2015/02/08 01:10 | Those who take on | 23 |
| 2015/02/05 17:00 | Revealer | 22 |
| 2015/02/04 00:21 | Those who wished for happiness | 21 |
| 2015/01/30 23:47 | traitor | 20 |
| 2015/01/16 00:26 | Loser | 19 |
 | Become a Novelist https://ncode.syosetu.com › ... I'm sorry, Onii-sama! Author: Kannagi. Having been reincarnated into my favorite novel, I run around trying to save my favorite character from a difficult situation! In order for him to live a glorious life... |
 | Kakuyomu https://kakuyomu.jp › works I'm sorry, big brother! I was born as the villain in the story I loved. Now that I've been reincarnated into my favorite novel, I'm running around trying to save my favorite character from a difficult situation! |
 | Alphapolis https://www.alphapolis.co.jp › detail I'm sorry, Onii-sama! Kannagi. Having been reincarnated into a beloved novel, I run around everywhere trying to save my beloved character from a difficult situation! I hope to live a glorious life... |
| Kakuyomu https://kakuyomu.jp › episodes 3 Sept 2025 — I'm sorry, Onii-sama! Kannagi. Prologue. God, please. --- It's painful. --- I'm lonely. With trembling hands, I try to press the nurse call button... |
 | Novel Updates https://www.novelupdates.com › series › gomen-ne-onii... After reincarnating in the novel I loved, I run left and right to save my beloved character from peril! So that I can live a great life, I'll cut down my ... |
| Become a Novelist https://ncode.syosetu.com › ... I'm sorry, Onii-sama! Author: Kannagi · Previous · Table of Contents · Next. 21/28. Chapter 4: My Story. The One Who Wishing for Happiness. "You're the head of the family, yet you're being treated so well." In the room... |
 | note · nina 4 likes · 1 year ago I'm sorry, Onii-sama! (Kannagi-sama) ... This is a reincarnation story about a girl who is born as a villainous young lady in the world of a popular novel. The title and each subtitle are quite different from the main story... |
 | Online Novel Awards https://www.cg-con.com › rendou I'm Sorry, Big Brother! Title: I'm Sorry, Big Brother! Author: Kannagi; Synopsis excerpt. Having been reincarnated into a beloved novel, I must rescue my beloved character from a difficult situation... |
| Kakuyomu https://kakuyomu.jp › kannagi Sorry, Big Brother! ☆27 · Isekai Fantasy. Completed 28 chapters. Updated October 23, 2020. I love fantasy and cute, strong girls. I also enjoy romance occasionally. I like dark and... |