Another good question, though one Kidou can easily piece together an answer to. He's not certain it's right, but he's pretty sure he's on the right track. He folds his arms with a light frown, continuing.

"It's too risky. Had I known who you were once I remembered anything, would I have possibly given you a hint? Those who haven't Awakened suffer greatly if they remember things. I remember that any memory I had came with a headache. The clearer it was, the more severe the backlash. That's why I'm willing to believe Luci's warning that it could come at too severe a price."

Which meant that they really weren't capable of recognizing each other, if he wanted to also keep his br- Fubuki safe. None of this really sat well with him, but he had to accept it when it logically aligned that neatly.