"Terminal Trauma"
Wolverine is in Lowtown, Madripoor fighting the Yakuza. Their boss, Dai-Kumo, has his underlings extracting monkey brains for a "Cancer Cure". As it really turns out, the chemical they are extracting is really for a highly addictive drug that kills after only a few uses. Wolverine must travel to Japan to stop Dai-Kumo and the Yakuza.