Bit of a rough start, but there really is no reasonable way to start a premise like this, so I'll give it a pass. I'll also give it a pass because I want to see more of whatever the author is cooking in their mind.
Wow! A mannequin shaped being with a head that's made of fire! I wonder if that's a reference to the character Fistburn from The Man of the Burning Fist?! Like and subscribe if you agree!
I'm not accusing anyone of anything, but I just think it's incredibly funny that we're calling him slit eyes and squintboy, and it's only permissible because this is a manga and the characters don't look Japanese.
At least they didn't both die in a car accident. When is the childhood friend that the MC doesn't remember gonna show up?
(I like this so far, it's just really cliche)
You need to learn to suspend your disbelief a bit. You shouldn't be trying to imagine how this would work in reality. Every story falls apart with this train of thought.
This is what happens when you don't know what high school uniforms look like. It's super obvious they're in high school. What is this rant. It's a fictional story, not a guide book on how to deal with this situation in real life.
"Irresponsible writing." Oh I'm sure you are the most morally...