Hikaru wasn't super modern, to be fair. He was from the early 2000's, before selfie culture and before smartphones. He didn't even have a phone. Though it certainly could've been much worse, timeline wise. At least he was from the last twenty years or so.

Needless to say, he was totally lost. "A what?" he asked. "And why would I want your autograph, anyways? I have no idea who you are."