Spiral: Suiri no Kizuna
Spiral ／ Spiral ~Bond of Inference~ ／ Spiral ~Bond of Reasoning~ ／ Spiral ~Suiri no Kizuna~ ／ Spiral: Bond of Inference ／ Spiral: Bond of Reasoning ／ Spirală ／ Spirál ／ Spirála ／ スパイラル -推理の絆- ／ 推理之绊 ／ 스파이럴 ~추리의 띠~
Description
Ayumu Narumi's older brother Kiyotaka, a renowned detective and piano player, disappears all of a sudden. The only clue Narumi has, are the Blade Children. Two years later a row of murders and incidents begin, relating to the Blade Children. Together with school journalist, Hiyono Yuizaki, Narumi tries to figure out their destiny. (Source: Anime News Network)