Mamoru Kagemori is a dowdy boy whose hair is disheveled and wears thick glasses, which are actually a form of concealment/camouflage, and is very lazy except when he's saving Yūna.
Mamoru Kagemori is a plain boy with disheveled hair and thick glasses, which are actually a form of disguise. He reveals his true self (without glasses) when he transforms into a ninja to protect Yūna from harm and is very lazy except when he's saving Yūna.