One Half System

Ordinary people at the end of the previous life traveled to an ordinary parallel world, and by chance got the Lonely Stranger 1/2 system. So I have a copy of the system at night, and I have to fight against crimes committed by superpowers during the day, but where is the other copy of the system? Why can't I find any negative emotions in my memories, only good memories? Can he, who was ordinary in his last life, still be able to live the "lonely" life he wants in this life? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.