Fantasy world transmigration. MC is a last boss mad scientist. But ya have to mtl though so it's your choice.
Sorry, but my nit picker blood forces me to comment that I guess you meant Sci-Fi (Science Fiction) and not Si-Fi (Silicon Fiction)... not that the latter is a thing or anything.
The Record of Unusual Creatures might be my top favorite sci fi novels. Fun watching him explore new places/worlds and seeing all these fantasy creatures, too bad author other work is barely translated.
Oops. Edit cause it seems like you're looking for more VR/Litrpg than Sci-fi VR/Litrpg: The Legendary Mechanic Emperor of Solo Play The Novel's Extra Rebirth of the thief Who Roamed the World Sci-fi: Galactic Dark Net Forty Millenniums of Cultivation
im reading The bobbiverse, a nerd engineer called Bob dies and has one of those contracts for his brain to be frozen until they can revive him in the future, they do but his mind is downloaded on a computer as the A.I. controller of a space probe Now he has to shake those pesky bureaucrats that consider him property while going to space to explore the mysteries of the universe and he also has to fight the probes from other nations, he also can replicate and creates an army of bobs So, super nerds exploring the universe, giving a hand to humanity and other species, being space bros The books are: We are Legion (We are Bob) For we are many All those worlds
*auto-add on for Canadian authors Coughing up a few more: Themis files - sylvain neuvel Blindsight - Peter watts
Not sure Sword of Daybreaker might be another verse though xiling empire takes place in same verse as record of unusual creatures
From the titles they're prequels, xiling empire is the founding, right? While sword of the daybreaker is the goddess of origin that didn't go to school