Wait, so is this the character going to the shrine to wish for a larger bust, or him recounting himself doing this by using that character as a stand-in?
Because the former's strange enough but par for the course, but the latter is just wild. Like, "if you converted all that sexual energy into making a serious manga, you'd create a cultural phenomenon" wild.
Man is legitimately committed to the Knight bit.
I'm almost sure he's just unwilling to have his identity tied to his copious library of mostly porn, and other works that evolve (devolve?) into porn.
Which is rational.