Because everyone made fun of Illumi's skirt, you tell them that they will be punished for being close-minded and rude. Every last one of them must put on an article of traditionally female clothing and wear it for the whole day in order to teach them a lesson.

-Grumbles, "Okay, okay"

-Says "Sorry, Illumi"

-He goes and borrows a frilly kitchen apron from Mito which he ties around his regular clothes

-You tell him that's not good enough, and he has to borrow one of Bisky's dresses

-Insists that he should be left out of the punishment because Illumi is his brother, for crying out loud, and brothers are allowed to give each other hell

-When you say no, he asks if he can just put on some guyliner and call it day

-When you say no, he sighs exasperatedly and goes to ask Kalluto if he can borrow one of his kimonos

-Isn't bothered by the punishment

-Goes online and researches for something really cool to wear

-Ends up finding a culturally significant female outfit from a endangered tribe

-Because Leorio's comment was the most intolerant of all, you tell him he has to dress up full-on RuPaul's Drag Race style

-He has a sputtering fit but gives in and puts on the whole shebang, dress, stockings, heels, wig, makeup, etc.

-"Look at you, you're certainly serving fish," says Hisoka admiringly

-He actually looks kind of cute as a woman

-He has nice bone structure

-Hisoka drawls "I didn't even say a word about Illumi's skirt, so why do I have to be punished?"

-You realize he actually would enjoy cross-dressing, so you rack your brain to think of something else

-He snickers and says "Get over it, I'm the most open-minded person here"

-You realize he's right, and let him off the hook

-He asks if he can stick his hand up Illumi's skirt, since he's been such a good boy

-Illumi thinks all of this is unnecessary

-Says, "Can we just move on, already?"

-Threatens to stick a pin in everyone's head if they insist on carrying on with this

-Also protests that he didn't say anything rude

-Says, "OK, fine"

-He finds a long sleek black dress and gloves, and adds a Prince-style hat with a bit of lace dipping over one eye

-Only Chrollo could look so damn sexy in this

-Feels bad because he called Illumi a girly-girl

-Decides to be extra penitent

-References "The Rocky Horror Picture Show" for some ideas

-Dresses up in a corset, thigh-highs, and high heels

-You're not entirely convinced this isn't already part of his regular fetish routine

-Thinks this whole thing is hilarious

-Can't stop giggling the whole time because he knows he's got the best outfit of all

-When it comes time for him to show his outfit, he bursts into the room with a "ta-da!!!"

-He borrowed Shizuku's bra and panties

-He does a wild dance all around the room until everyone starts throwing things at him and telling him to knock it off