miyamura helping sawada here is so very important to me. i can't possibly put it in words why and how much. also, lets not forget the fact how much courage it took for sawada to took that one step while walking back to miyamura. in most cases, either they decline the helping hand in the fear of getting bullied more and given their history, sawada could have done that too; she could have brushed it off, that's the easier way. what i'm trying to say is that miyamura is genuinely kind-his kindness does not evolve after being relationship with hori or starting to get new friends or as a part of changing himself for someone but it was there already, inert and now he has friends he can influence.