Izumi, Miki, and Risa invite Hayate and Nagi to their school club which Hayate uses as a way for Nagi to socialize.
And also "Jurassic Park" and "Juraku 
ni nisan-paku (2-3 nights at Juraku)".
Y también "Jurassic Park" 
y "jura sin parque".
E também "Jurassic Park" e "Juraku ni
nisan-paku (2 a 3 noites em Juraku)".