[@Raijinslayer]
Well Manami and Shiro only stumbled upon Cody by chance, they have other business in the city....They're just taking this opportunity for Georgie to gain the grimoire Cody possesses.
However Cody would probably burn it and kill himself before he hands it over to anyone...especially Shadow Heart. My god he's gonna freak out when he sees the guild mark.
Also Georgie loves collection Grimoires, so just a warning to anyone with one (or any magic book really)