Hayate no Gotoku! Chapter 120:It Was Momoi Who Was Referred to as Having Skin like an Eggshell After a Bath ("湯あたりたまご肌"と呼ばれたモモイがよ~," Yu-atari tama go hada" to yoba reta Momoi ga yo ~?)
After being confused by Nagi's question if she came to conquer earth, Maya pulls out Char Aznable's uniform from Mobile Suit Gundam.
While explaining to Hayate that a UFO might have crashed into Shimoda instead of a meteorite, Nagi says the phrase "This is the most important Matter". This is a reference to the series Onegai Teacher.
Additionally, Nagi also says "How could you forget to regenerate your glasses?". This is a reference to Kyon's line to Yuki from episode 4 of the Haruhi Suzumiya series.