Pervy Catgirl Fancier
I thought it was pretty clear. He's got blonde hair. Like actually blonde, not 'I'm an anime character blonde'. Everyone thinks he's a juvenile delinquent because of that, not helped by the misunderstanding on the first day of class and his awkward social cues. At this point, he could rescue a puppy from a drowning river, and they'd think he's got something evil in mind.Though it's failing on explainig why the main character doesn't have any. From the way everyone responds to him you'd think he looked like the Kurgan.
In other anime news, Ika-Musume gets props for actually getting people who speak English for the native English speakers. WAY to few series actually do this, and it's a serious disruption to my suspension of disbelief when a native American isnt completely unrecogniseable.