Responses
Ren wouldn't run, he wants to stay by Haru's side.
Yeah, he also thinks that he wants to stay as long as possible because Haru would leave him. But Ren won't leave him, it would be out of his character.

i mean it would be to predictible ... and it alredy happend once, the second time it would be just boring ...i think that with haru's acident will not happen much but probably he would talk with samone about if he didn't meet ren his parents wouldn't die ...and ren will hear and or would run away from home or go back to haruka or samething like that ... it's just my opinion and I would enjoy if this happens ..