Detective Conan , titled " The Unfriendly Girls Band (Part 2) ," aired in Japan on October 22, 2016. It concludes a suspenseful case that blends a classic murder mystery with significant "Black Organization" lore, specifically focusing on the tense dynamic between Masumi Sera and Rei Furuya (Amuro Toru). Case Summary: The Girls Band Murder
The murderer is revealed to be Rumi , one of the band members. Detective Conan Episode 837
It is confirmed that the friend was Scotch , a member of the Tokyo Metropolitan Police Public Security Bureau who infiltrated the Black Organization alongside Amuro. Detective Conan , titled " The Unfriendly Girls
Amuro (Rei Furuya) inwardly reflects on Scotch’s death, maintaining his bitter belief that Shuichi Akai was the one who killed him—a core conflict that drives much of their rivalry in the series. The Unfriendly Girls Band ~ Part 2 - Detective Conan Wiki It is confirmed that the friend was Scotch
The case triggers a flashback for Masumi Sera. She remembers seeing her brother, Shuichi Akai , at a train station four years prior with a mysterious friend who taught her a few notes on the bass guitar.
Beyond the immediate case, this episode is a "manga-canon" entry crucial for its character reveals: