I've read a good number of chapters now. I'm going to say that it reminds me so much of LetMeSoloHer. I even think LMSH might have been inspired by this guy, lol.
Also the art style is so very great, I gotta hand it, haven't had a good art style manga for a while, but for the story, gotta say it's a typical power fantasy vrmmo style, I guess, if I were to put it in, SLF should be in the same category as a certain middle age man vrmmo or blade skill online which main focuses were 'power fantasy story-telling vrmmo' category, what those have in common that they focus on fighting and ability, while having little to middle explanation or interaction of the game system as whole, unlike OSO that focuses on the system of sense, skills and traits combination, character's build, party setup, material gathering etc.
For example, the fighting scene, OSO relies heavily on players' senses and the combination of their build and how to counter the opponent's build, while SLF, a certain middle-aged man, destiny unchained, and the like are focused on player's innate fighting ability, either it from their real life or another game, etc. more than the game mechanic itself, which is why for me, I don't think OSO and SLF is the same category, sure they're based on vrmmo genre, but in the different story style completely, SLF is a good read for me too, but since I've fed up power fantasy type, I prefer light-heart or slice of life more, so no.1 for me in vrmmo genre is still OSO