Dude I didnt know that this was a spin off no wonder I was so confuse in the beginning like I fully believed that he lost his memory or something and the dude was helping him I just read the latest chapter do I still need to read the main??? Idk too lazy I guess I have to
You can only read the chaps involving them so you'd understand the beginning of their story ~
Some people already listed them in the comments btw, so you can find them easily !
This is *sniff* so peak