Matsuda

Feeling like dead weight beside the rest of the team and tired of playing Misa's handler, Matsuda spots the Yotsuba headquarters from a film set and resolves to investigate on his own, leaving the model with her crew. Back at base, Watari relays that a famed detective, bankrolled by Yotsuba, has demanded L's identity, though L notes that the top-ranked sleuths are all himself, proof the company means to dig him out alone. The team concludes Yotsuba is hand in glove with Kira.

Climbing seventeen floors, Matsuda overhears talk of a secret weekend gathering, follows the men up another flight, and catches mention of Kira before tumbling through a door into the assembled executives. He bluffs his way as the manager Matsui, pitches Misa for their ad campaign, and signals L through a rigged belt buckle while their guards size him up and resolve to kill the supposed intruder.

L phones in as a drinking companion to confirm the danger in code, then directs Matsuda to fake his own death since the men lack his real name. Feigning drunkenness, Matsuda balances atop a balcony rail, deliberately slips, and is caught by a mattress Soichiro angled from a lower floor. A heavy bag hurled after him lands with a sickening thud, and Aiber, made up as the fallen man, sells the corpse while Wedy plays the horrified bystander. The executives scatter, relieved he dropped before Kira had to act.

Two weeks on, with Matsui presumed dead, the directors gather again, and when Hatori voices a wish to quit out of fear, the others coldly assure him he is as good as dead for saying so. His frantic claim of joking earns only blank stares. The team's planted cameras catch the meeting, and Soichiro notices the count has fallen from eight men to seven. A passing touch confirms that the ringtone heard here is the song Alumina.