You probably knew this manga since it is situated in the same universe as Bleach, tho it isn't in Japan. Burn the Witch happened somewhere in Europe (where witches thrive)—Reverse London (if my memory serves me right). Also, I know you don't like sports anime, but this is one of the first mangas I've read since then, and it's one of Inoue-sensei's manga (so I guess it's worth the mention). Buzzer Beater setting is really not the usual one because it's somehow intergalactic, tho the story takes place on Earth—precisely New York. Like Burn the Witch, I think it's kinda a one-shot story as well.
Still waiting for a burn the witch sequel that may come a few more years before any of it gets announced. As for the sports title, I never heard nor search for those stuff.
I'm also looking forward to its sequel, and yeah—discovering Buzzer Beater was also something that I've stumbled upon because I still got sepanx after finishing the SlamDunk manga way back then ahahahha...