Increasing your gear level (from 0 to 5) will increase your stats a lot, but a lot of people in the KR side will always recommend to not level up your gear since it’s a “waste of resources”, but why is that?
There are several reasons, but TLDR: you should upgrade only starting rank 6 and above, and never rank up your gear to the next tier if you don’t have a full set prepared.
To see this better, here’s an example of a Rank 6 +5 piece of gear vs a Rank 7 not upgraded:
But Sefhi, I have a Rank 7 piece of gear I can upgrade, what’s the problem?
You might have some pieces but a lot of them are locked behind story progression, meaning you will be losing gear, becoming weaker and worse of all, not having replacement for those pieces of gear since they’re locked behind stages you can’t reach yet.
If you understand this system, feel free to level up your gear as you wish. For people who don’t want to lose resources or brick their characters, you can start leveling up gear starting at rank 6 and DON’T RANK UP until you have farmed a new set to level up.