Shifting reads and unreads marks on group pages -> chapter tab doesn't really work as intended.
If it's initially unread, shifting to read the first time works, but subsequent clicks try to mark it has read again, returning a 500 http code.
If it's initially read, shifting to unread the first...
"Dispoison"? Are you for real?
I don't know how hiragana and kanji work, but I'm 99% sure that in no universe does a kanji force you to write down "dispoison" instead of "detoxify" xD