Seriously, dont you think Haru had enough of falling and hitting his head? That is a lot of damage taken to the brain, he might loses his memory again and this time, permanently.
aha! i am so scared that he might forget Ren out of all the people! or his personality might change…cause if that happens, MY heart would break to millions before Ren’s heart does... ヽ(`Д´)ノ
Happy father’s day!