Ends in the short epilogue sequel. Anyway, the first half was pretty entertaining and engaging, with quality mystery in it. The second half of 2014, especially the start of it, was good as well, though inferior to the first half it was consistent in entertaining. The post 2015 third half though... Very underwhelming and subpar, which is unfortunate because it could have been solid.
I agree with the user that said that the manga was interesting until the death of Fukube (or "his first death") at the school, after that it went dowhill drastically so. A beloved manga for sure, but not for me. It simply stopped being enjoyable and just dragging, lost all the appeal it did buildup the more it progressed and wasnt satisfaying.
It is a very loved manga, i saw multiple posts on instagram reels considering it peak manga and a masterpiece, wish i could see that anywhere on it. It becomes such a mess that it gets hard to even recall.