You were in a party crowded by many people and you bumped into a strange girl.. She stood up

Karin: "Sorry.."

Karin moves forward and enters the restricted area of the party.. She went to the highest floor of the building which is the 10th floor

Karin: "Ara~ Guards again as usual in every big company~ Makes my mission so easy."

Karin prepared her silencer and threw a sleeping gas.. the guards fell asleep

Karin: "So easy~ now to manipulate the person I bumped into earlier~"