I feel like the quality Shion most admires about Nezumi isn't really one single part of his body. It's like his overall beauty, and the grace with which he moves. If you let him, Shion would probably kiss every single inch of Nezumi's skin individually.
("Alright at first, but gets boring after a while. This isn't a video game, Shion. You don't have to get 100% completion of every area to level up or something. Just f*ck me already."
"Excuse u Nezumi, it's 'making love' because i love u k thx")