Character name and journal: Teshigawara Naoya (anotheryosuke)
Sensing desires: Go for it.
Manipulating or creating desires (not very likely but still): Sure! We can talk it over if it comes up. :>
Taking the form of desires: Haha, sure.
Creating dreams/illusions involving desires: Yep.
Telepathy-like communication: It'll freak him out, but he will think it's fucking awesome once he gets acclimated.
Anything spiritually abnormal she might notice: Nothing whatsoever! He's a completely ordinary kid.