With Unlimited GQS Works, at least he can avoid his harempocalypse.
[Dragon Slayer from the Age of Old, Nemesis of the Deity of Chaos, Devil King of Huang Quan, Wielder of Heaven and Earth, Ally to the Eternal...
The earlier parts of Throne of Magical Arcana has that. The MC brought Beethoven's 5th Symphony, Moonlight Sonata, and Piano Sonata no. 8 to the...
Genius of a Performing Arts High
It's either Immortal, or Everlasting Immortal Firmament. Both came from the same author. If you do read Everlasting Immortal Firmament, do read...
How about Superstars of Tomorrow?
Natsume yuujinchou, perhaps?
I prefer the Sower, in ES1. Strong as hell.
I think God of Money would be exactly what you're looking for.
The Grandmaster Strategist
Romance of Dragon and Snakes
Because blowing things up are fun, and when you found out that you can blow things up even more than you can before, you'd want to test it ASAP.
Romance of Dragon and Snakes?
For MMORPG kingdom building, we have The World Online.
The other one is not quite the world-building, but I think you'll like Rakuin no Monshou.
The one that immediately came to mind is the one from Yozakura Quartet.
Separate names with a comma.