From the very beginning, it was very well established that ever since he joined the Third Division, there was a sense of rivalry about him. Always trying to outdo others, and he always succeeded at it too. He unlocked 25% of his suit's power in almost no time at all, when it took you months to try and at least get to 20%.

Sure, you knew about his Japan Ground Self-Defense Force background, which sure, would probably explain why he was so insanely good at everything he did; not Mina Ashiro's level, but let's be honest, who else but her was on her own level?

That's why you were determined to catch up and surpass at least Kaguragi. After all, you were in the same Division.