A skilled elite ninja of the Hidden Cloud, Furui once stood among the fighters chosen to hold back the rampaging Eight-Tails. Decades before the great war that engulfed the ninja world, the beast killed him, goring him on one of its horns and opening a lasting rift between Killer B and his son Motoi.
Dark, spiky hair and round spectacles mark Furui's look, worn with the usual Cloud-nin flak jacket, shin guards, and a forehead protector. He and his son look strikingly alike.
The anime fleshes him out as a courageous man devoted to his village. When morale wavers, he urges his fellow fighters to keep the beast pinned, warning that surrender would spell ruin for the Hidden Cloud.
The Third Raikage handpicked Furui for a specialist unit tasked with reining in the Eight-Tails' earlier host whenever the beast slipped its control and rampaged. In that duty he swung a weighted chain to pin the creature, and the anime credits him with Lightning Release deft enough to lock the beast in place so his comrades could rush in and hold it fast. The role ultimately killed him. Around thirty years before the Fourth Shinobi World War, the Eight-Tails broke loose during one such struggle and ran him through with a horn. His death soured the once-warm bond that his son Motoi shared with Killer B, after B took up the beast as its next jinchūriki.

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Furui is a skilled elite ninja of the Hidden Cloud who once served on a team tasked with subduing the rampaging Eight-Tails.
Furui dies when the Eight-Tails breaks loose during a subduing effort and gores him with one of its horns, about thirty years before the Fourth Shinobi World War.
Furui's son is Motoi, whose once-warm relationship with Killer B soured after Furui's death, since B later became the Eight-Tails' jinchuriki.
Furui uses a weighted chain and Lightning Release to pin the Eight-Tails in place so his comrades could rush in and restrain it.
The Third Raikage handpicked Furui for the specialist unit responsible for reining in the beast whenever it slipped its host's control.
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