Thank you for all of your comments. It is really heart-warming.
I've decided to rewirte from the beginning and continued to write the next chapter too.
whether you will stay with this story till the end or not, I really was thankful for every who support it.
I guessed I need beta hunting to do! The next chapter will be post and last chapter will be complete.
I'm sorry for the late notice. I'm glad Ayumu's story goes on.