ALL OF THEM i like every shumika theyre all my favorite
hmm if i have to pick one though... i kinda like a bit of a power imbalance relating to like status/authority if that makes sense? like i like when one of them(most of the time Shu) has more power than the other. my favorite would have to either be puppy/kitty Mika x owner Shu or student Mika x teacher Shu i think the imbalance is yummy