While the last panel is a direct parody of a scene involving Heero Yui, she's not wearing his clothes or anything, and the cosplay tag requires the original character to be tagged as well (for some reason), so the tag is inappropriate here. Tags shouldn't be used as explanations of jokes.
It seems the rumor that there are only crazy female characters is true...This is a Heroine Investigation.I see,
I see...To be continued...If you are the Heroine of Gundam Wing please raise your hand.