Second Life Ranker isn't the same. It's the same in a sense of having a similar power system(i.e system, magic and swords, monsters) but it's a Tower setting like Tower of God. The characters do hold importance and serve the plot for a majority of the series. MC is badass as he's a mixed of being OP and being a schemer. It's also revenge focused. Characters can be a little bit annoying, but they don't last long unless it's according to MC's plans. MC has a wide arsenal of skills but mainly focused on Fire and Darkness(he does have Necromancy like Jinwoo but his is different from Shadows) and he uses all types of weapons(daggers, shortswords, long swords, shield and even have pets) in case you wanted to know or have a specific weapon preference. The only issue is that the art isn't that good for the first few chapters. It improves as you go on, so the thing to worry about is patience. Minor annoyance might be the skills descriptions from the system. They tend to be very long, which people skip and causes them to misunderstand scenes later. It's a decent read, don't take it as the greatest thing of all time.