Suguru Shimura

Thick black hair tops Shimura's head, set above a pair of brown eyes. His usual outfit pairs a business suit with a lighter coat worn underneath.

Shimura runs personnel for Yotsuba and keeps a guarded, suspicious watch over everyone around him. That same knack for catching tiny details, like the faint shift in Reiji Namikawa's expression during a call with Light impersonating L, is what won him a seat at the secret meetings, though the guide notes he never wanted to be part of them. His associates dismiss him as a worrier and talk down to him, yet his hunches tend to land true: he rightly tags the detective Eraldo Coil as a plant for L or the authorities, and he steadily regards the gatherings as both reckless and immoral. A law graduate of Kyodo University, he played rugby well enough to be courted for the national side and has no taste for gambling.

Pulled reluctantly into the so-called meetings of death, Shimura raises one warning after another about L and Eraldo Coil, all of which the other executives ignore. Desperate to derail the Yotsuba Kira, he reaches out to Shingo Mido, and on the night Higuchi is captured the two meet privately at Mido's home, soon joined by Namikawa, to puzzle over Kira's identity and weigh how they might step in. Higuchi's arrest that same evening renders any plan moot. Roughly five months after L dies, Light enters the surviving Yotsuba members' names into the notebook. The manga keeps his death offscreen, but the anime shows him as the last to fall, collapsing moments after Namikawa expires in his arms.

The Relight retelling alters his fate, depicting a manipulated Shimura who walks into the path of an oncoming train.