1. What does it mean?
리세마라 comes from Japanese reset marathon. It describes repeatedly starting over to obtain a preferred initial draw or starting situation. Korean players may also shorten it to 리세.
Also written or said as risemara
2. The nuance
It is a description, not a recommendation to evade account rules. Games differ in whether restarting is supported, useful, or permitted, and repeated resets can consume substantial time.
3. Examples
“리세마라 대신 처음 나온 캐릭터로 시작했어.”
Instead of rerolling, I started with the first character I received.
“리세마라를 오래 하다가 정작 본편은 못 했네.”
I spent so long rerolling that I barely played the actual game.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.