https://www.scribblehub.com/series/372967/the-shut-in-demon-king-finally-comes-out-after--years/
https://www.scribblehub.com/profile/69452/mrpasserby/

My drafts are posted here at Tapas before I post them on Scribble Hub and Royal Road. So, if you're hungry for more chapters, you can check them out here in advance, though some of it may change, but not entirely. But I would rather recommend to read the official chapters since there are times where I don't update the drafts here on tapas right after I edited them. 

https://tapas.io/series/The-Shut-in-Demon-King-Finally-Comes-Out-After-3000-Years/info