So, uh, what kind of chocolate are you giving to me? Literally 'Which type'. In other words, whether it's out of obligation or because she actually has feelings for him. Look up Giri and Honmei if you're curious.

After Episode 21

Hmm, I wonder?

Because it's Valentine's!

A chocolate bar... why?

This is for you, Kazama-kun.

Oh, before I forget-

Nice work!