I Secretly Develop Myself In The Demon World - Chapter 10 - : Mental Attack

Ludwig Heart, the heir to a vast fortune and a life of luxury, craves only one thing: freedom from his gilded cage. But when a plane crash catapults him into a world of magic and danger, he awakens not as the hero he dreamed of, but as a victim in a twisted ritual. Trapped between the ambitions of dark necromancers and the wrath of vengeful gods, Ludwig must navigate a deadly new reality where his life is no longer his own. Stripped of privilege and resurrected as an undead pawn, Ludwig’s fight for survival will determine whether he reclaims his destiny—or becomes a mere footnote in a world of shadows and deceit.

The Third Miss of the Qin Clan is a useless and timid person. When the Prince withdraws from her marriage, she commits suicide by jumping into the river. In the 21st century, Qin Chu, a genius agent, is framed and his soul crosses over to the Third Miss of the Qin Clan. So what if she’s useless,

She died in her prime as the Queen of Song.

After being reincarnated, she becomes a simple trainee.

Losing her former glory? It doesn’t matter—no one can compete with her voice as a beautiful singer.

Mocked by her lowly birth? It doesn’t matter—her true identity is enough to make the whole world tremble.

She owes huge debts? It doesn’t matter…

A powerful boss once whispered to her, “Your debt will disappear if you become my woman.”

But the proud her would reply, “I’m sorry. I would sell my art, but not myself.”

- Description from Novelupdates

After being transported to this world, Nara Kazuki discovered that as long as he grinded enough proficiency, his jutsu could level up.And so, he began walking a very... peculiar ninja path.