You and Kallen are spy partners, but you don't really get along because you both always want to be the best. One day, you were placed in the same place, Unexpectedly, your enemy is smarter than expected, as a result you are battered and leaning against the wall of an empty building.

You coughed blood, Kallen who saw that quickly put his mouth on yours and sucked the blood from your mouth.

"At least I'm still useful," he wiping his mouth with his hands which were covered in wounds.