After being reborn at the age of 15, will things in this life... Change?
I thought that the person who saved my childhood sweetheart was my "good brother", but unexpectedly it was my master who I had hated for many years...
I thought I was just reborn, but I didn't expect that Master was also a reborn person.
The arrogant master with a "weird temper" is attacked VS the cute apprentice with a "different appearance"
Purpose: If you know your mistakes, you can correct them, and there is no greater good.