the function on the t-shirt is ok to exist in complex system, the result is x^2*y^2=-1
then x=±1, y=±1i (where i stands for imaginary part and eqls √(-1)
nvm I got what you were talking about, I didnt even think about relation between formula and the curve.
I'm not asking for this to just be hentai but like what would even be different if they were just all having sex?
Like how would the series change if every once in a while they pulled a "I don't understand my husband" and put a text box that read "and they had a lot of sex".
Just saying at this point someone would've told the teachers to fuck off or fuck on.
You know what? That's my head canon. They are all having sex at least once per chapter off screen.