Someone brought up on Discord the “Tego” from when you take Kud and Mio to the test of courage.
By the powers of Google I found a blog explaining it being an Air reference. The word that GaoGao translates to “Violate” is 手込め[Tegome]. We obviously also have Mio doing Minagi’s iconic “Po.”
There’s a fuckton of other Air references in LB!, especially references to