I completely agree with you. Seeing any female terminology in BL in reference to a male's body/etc. just bothers me so much. *sigh*
I think it's supposed to be like kinky to call a guys ass a pussy. I see it quite often in BL these days but it was so overused in this manga that it was cringe. There was a little note from the author at the end that said the reason Yuuji keeps calling Kana's ass a pussy is because he watched a lot of heterosexual porn so he picked up the terminology.
same..
I mean, it was super sexy and well drawn (≧∀≦)
BUT...I can't take it when they call it a pussy in yaoi. It just kind of takes away from it for me.
(╯°Д °)╯╧╧
it's his ass, and that's why we are all here reading it! Specifically because it's NOT a pussy!