Oh my god!! Somehow I totally didn't see Inochan's character being the sole perpetrator?! But omg he's so amazing omg. His evil laugh is so wonderful /* A */ And his acting is so great?! I get so nervous about what other people must think about him, but he's really doing so well, I think ; A ; My baby!
It's kind of funny, because most people (especially fans who weren't in Japan in spring of 2015, or people who weren't fans yet at that time) are voicing how astounded they are at his acting, but to me and other Japanese fans whose opinions I've seen, there are just a lot of elements that are reminiscent of Karafuto Ojisan. Of course, there are major differences; he didn't play a psycho killer in Karafuto Ojisan, but there are some emotions that he shows that are the same. He really is a wonderful actor, and I'm so happy for him that he has such a major part in this drama.
So yes!! If you like mystery/suspense and you're looking for a new drama to watch, please please please check out Soshite Dare mo Inakunatta! It's actually turned out really good, and even outside of Inochan's performance, I'm really enjoying it a lot!