An antiphrasis is a figure of speech that is a word used in an abnormal sense esp. ironic. A figure of speech, sometimes termed a rhetorical figure or device, or elocution, is a word or phrase that departs from straightforward, literal language. ...
Examples:
"He is but a youngster" (describing a middle-aged man)
"The past is strongest in its resurrection; but she will have neither." (succumbing to nostalgia; from "Three-Fold Flowers" by Andrea Duerme)
The misunderstandings that ravel the two main characters' relationship do play a leading role in MI.
Irony against which these misinterpretations are propped, is plainly a thought trope: it skilfully exploits in fact some words by straining them to convey the opposite (antiphrasis) of what either is or is supposed to be, but also to bring something else to attention by means of comic paradox.
Therefore its allusive value is bound to linguistic acts, like it befell the pun playing about with ochiru and Godai's falling downstairs.