The first indicator (just my theory) is when MC's parents magically turned nice. ML aka lil bro is probably like a tree spirit or something and is manipulating the time and memories of MC. I'm guessing back when MC had that childhood accident, that's when he met the tree spirit, and that's why it had blood on it? I'm not sure, but I wonder what's really going on behind the scenes.
The first indicator (just my theory) is when MC's parents magically turned nice. ML aka lil bro is probably like a tree spirit or something and is manipulating the time and memories of MC. I'm guessing back when MC had that childhood accident, that's when he met the tree spirit, and that's why it had blood on it? I'm not sure, but I wonder what's really going on behind the scenes.