>>283540231 (OP)
If every teacher looked like a porn star I would never get any real work done. I'd just be failing upward and sucking up to her good nature and just doing my homework to please her.
>>283540409
Same reason she has massive fucking tits. author wanted to draw her that way.
Really, if it wasn't for the cleavage and bare shoulders, it would be a fairly accurate Tackle costume.
>>283540231 (OP)
No, every teacher should look like Onizuka. I haven't read the manga, but it says Great Teacher right there in the title, so you know he must be good.