at first, i kinda really hated the S&M couple, but then they grew on me. i especially love that while, outwardly, it may seem that yuu is playing mari like a fiddle, it is usually the reverse and i love how flustered yuu gets haha
Mari/Yuu are great except for that one moment way back (Retribution or reward for a side glance), I still feel that was just Yuu being mean out of jealousy and not in a cutesy way like this