When Illumi gets a high paying job for a client, he is told that this client usually asks for more than just an assassination. Not wanting to back off on the already accepted job, and not caring in particular about the extra services he has to provide, he calls in a certain person to help him prepare for this. (Starts mild, but becomes explicit) HisokaxIllumixHisoka

Illumi accepts a job from Hisoka against his better judgment. When "a date" proves to really be, "just a date", both his patience and his deductive skills are tested. IllumixHisoka