No idea how the og series end and don't want to spoil S01 ending here.
About the subtitles, it is extremely important to see it subbed. The way Mariko translate the words between the Japanese and the English guy is really important to the development of the plot and the characters. It would be interesting to have a version of the show more centered on the English guy without any subtitles until he starts learning Japanese and have the experience of not understanding what is happening around him until he starts understanding too