"Even I have times when I like to behave like Aki-san."
You mean like an actual person instead of a one-dimensional cardboard cut-out without weaknesses or emotions?
Not that Aki isn't a one-dimensional cliché...
Edit: Until about chapter 40 or so, when she becomes one of the most original female characters ever.
Wow. This manga was such a boring cliché mess and then suddenly it becomes one of the best things ever.