Thanks for the translation!
I just thank God that I caught up with the manga with the chapter where they kiss, I can't even imagine having spend years reading 1 chapter a month waiting for that to happen.
Page 14 shows Rei encouraging Matsunaga while talking over the phone, but in the anime Rei is telling his sister something like "Matsunaga is not going to retire, he will continue playing shogi" which makes more sense to me.