MTL - Please Start Your Show - Chapter 37 Thirty-seventh Raiders:

Zong Shou is a player of the historical VRMMORPG “God Emperor,” and him being one of the “Seven Emperors” within the game.

For unknown reasons, Zong Shou finds himself transmigrated into the past, a period just before the “God Emperor” game history started! Possessing the weak body of a monster princeling in the process.

Zong Shou adventure describes his struggles to stay afloat in a merciless environment, and rising up despite all adversities, of course, surrounded by beauties along the way.

- Description from Novelupdates

Luo Zheng is at the bottom of the Luo Clan hierarchy, despite his family being the founders of a power refining technique that could instantly defeat any opponent.

One night, enraged by unfair treatment from a family steward, Luo Zheng burns the family records. In doing so, the hidden magic in the book engulfs him and Luo Zheng becomes a new skilled fighter. Fleeing his home and despicable clan, Luo Zheng must learn to harness his powers to rescue his younger sister while his own cousins are on his pursuit.

- Description from Novelupdates

The world I reincarnated into was a world that enabled you to use magic after having read a Grimoire.

And the Grimoire’s contents areーー you wouldn’t believe it- it’s 「Manga」.

This world’s people would take around a year to read a single Grimoire (Manga)

While for me, it would not take an hour, as it was「Manga」

Interpreting and understanding all kinds of Grimoires, the 6 year old me who became the World’s Strongest Master Mage, welcomed brides that were also 6 years old, and started living a carefree life……!!