at one point, I actually did play almost exactly this guy in an SR campaign, an edgelord mall ninja street samurai that only really brought any sort of combat effectiveness via metric fucktons of Kamikaze, which is basically omnimeth.
His name was DRUGNINJA, or at least it was on the sheet, as any time anyone asked, I made up some fresh pseudo-philosophical bullshit about how he was "the darkness within the light, the penumbra, the deepest part of the shadow" or some horseshit like that. In case you couldn't tell, this guy was completely tongue in cheek, and because his only augment was Narco, which basically just existed to make the drugs better, I expected him to have the lifespan of a fruit fly
Thankfully, he never actually outlived his comedy value, but he did last way longer than I wanted to play him. this is primarily due to my unholy dice luck, and habit of hoarding more Edge ( basically SR's "emergency dice") than I realistically needed.
Now if the fate of DRUGNINJA is any indication for the future of Methed-up Samurai, he's going to die of a huge multiple drug overdose while going berserk and trying to beat down his dealer