The Guide is Actually a Body-Switching Esper [BL] - Chapter 1: Death in battle?

Travel across different worlds and become a fallen aristocratic lord. With the help of the proficiency panel, you can start your liver experience with the ancestral knight breathing method, follow the wizard’s footsteps step by step, and embark on a bizarre and mysterious journey.

- Description from novelbuddy

Son of a bitch! I just finished this godawful fantasy novel, and now I'm knee-deep in it – as David, the disgraced son of the Solarian Empire's top general! Talk about some twisted cosmic joke. But hold on a damn minute... maybe this isn't all bad. Armed with the knowledge of that trashy plot, I can become the ultimate shadow player, an overlord perhaps. Screw the damsel-in-distress harem too – it's time to pull the strings and become the real power behind the throne. This isekai might be a steaming pile, but I'm rewriting the ending with a little more... Debauchery (wink wink).

BL manhua artist, Ti Xiao, has been single for many years. As such, he is under constant pressure to find a partner and get married. His family’s little niece shipped him together with her school’s English teacher to form a CP. The editor at work also want to introduce their friend to him. One day, a new neighbour moved in next door. He couldn’t help but notice that he seemed kind of reserved and cold. After getting a glimpse of him, he was ready to make trouble. He used his numerous ninja skills to discover his new neighbour’s identity. It turned out he was the English teacher at his niece’s school! Not only did he like his work and was his fan, but he was also his editor’s friend!

- Description from Novelupdates

“Introduce yourself!”The smile on Aoba's face slowly converged, and he became extremely serious, which made his face in the shadow of the backlight even more terrifying.“My name is Yamanaka Aoba, fourteen years old and live in the Anbu dormitory. I work in the Konohagakure Intelligence Division and live an ordinary quiet life every day...”Aoba transmigrated to the world of Naruto, became an ordinary Yamanaka clan member. Due to his frail body, the clan arranged for him to become Anbu in the Konohagakure Intelligence Division and conduct mind-reading interrogation work.When he didn't know how to pass the level, he awakened the Mind Reading System. Not only could he read memory, but he could also get rewards!Aoba learned from the memories of those who need to be interrogated that the ninja world was far more dangerous than he imagined, so he decided to grow wretchedly in the Konohagakure Intelligence Division and would never waver before becoming invincible ninja world.Ten years later, the Kyuubi Rampage broke out.Seeing that Kyuubi's claws were about to smash the Konohagakure Intelligence Division, Aoba had no choice but to make a move.“Kyuubi, you are too strong. You should still be sealed!”This is translated novel.