Death Stench Of The South Seas is the first chapter of Gyo .
In the ocean, Tadashi dives the ocean. However, A Shark attack Tadashi and make him jump out of the ocean. At the cottage, Tadashi wants to give him a kiss from Kaori. Kaori didn't want to kiss him because of the bad breath. Tadashi brushes a teeth twice a day.
The Truth is, It was a smell of a rotten fish.