At the foot of the youkai mountain and under the home of Shinmyoumaru the "Needle Castle", he have a place who stinks in making people nervous with tiny sweatdrops on forehead "kusaïri" a zone with a guard post for monitoring the zone, in the kusaïri center a tree with a giant durian grotesque absurd&comic, it was a mistake of Yukari Yakumo. not even fairies youkai or humans... just to say nothing in Gensokyo dare approch or enter in kusaïri excect for good reasons because her local aroma is a faint stinky fog with flies, but Yukari are above the durian bomb

Yukari: hehehe it time for my little joke of the year

Yukari with her gaps ability, she make the legendary giant grotesque absurd&comic durian bomb shivering and moving side to side on her branch before return in her gaps, it stay 3 hours left before the durian bomb fall and open with her stench rippled outward&spread fast across in all Gensokyo in creating a small amount yellow ripple smell drifting in the wind, everyone is aware of that phenomenon since many years like Eientei and Myouren Temple people, it a moment of tension and nervous for everyone because il gonna stink and the foods croop and sake gonna spoil by the stench... without forgot the victims who gonna stinks... some people are aware and prepare themselves with a panel " please don’t stink so much this year" meanwhile some people are unaware of the decount of 3 hours have started like reimu and marisa... but aunn and shinmyoumaru gonna aware them