I saw this movie like a decade ago (OMG!), one of the first Japanese movies I've seen and I recall how disturbing and gruesome it was. Nevertheless, this movie started my addiction to Japanese dramas/movies in high school setting so it'll always be close to my heart. Don't know about the remake though.
WeTV has a free trial for vip if you want to watch the episodes with English subtitles.
Yep, I just saw it this on WeTV, don't know if it has been more than a month, but for some reason I'm still a VIP. Haha. BTW, VIP subscription is only a dollar/month, which is already a bargain.
Personally, the best treatment for a slump is to JUST STOP. Watching more will lead to more burnout and even if a drama is really good, you might not like it because you're still in a slump and everything else will look stupid to you, which is bad bc you might missed a really good drama because you're not in the mood. So take a breathe and just stop, drop everything for now and focus on non-Korean/Chinese drama related. A good book/manga might calm your nerves, and as for me, I usually watch clips of Michael McIntyre's stand-up comedies since watching too much Kdramas/Cdramas/Jdramas makes me feel like I've forgotten how to speak in English.