Comments of chapter undefined of BNHA: Accelerator The Strongest Hero

there are some grammar mistakes here and there, also why would accelerator help them? cuz after rereading some paragraphs a couple of times i did not see any proper reason. if he wanted to help then he would do it in a roundabout way such as walking normally through the conflict, making his presence known, giving an excuse to why he was walking there, and then reflects the villains attack to them before continuing his daily life