If I see "I concealed my presence and followed him" one more time I'm going to kill someone.
There is a lot of dumb Kiyo monologue in this one. The author is desperately trying to portray him as a robot who's learning emotions for the first time, but he's miserably failing and it's coming off very forced. Especially for someone as smart as kiyotaka, this doesn't feel natural at all.
But hey. He asks Kei out. Even though he went all "she's my book into romance, and once I finish reading her I'll toss her out, maybe"
very cringy, right?