Old news. Yeah, basically his Kiais annoyed Ayane. And majority of the DOA men in 2 (well particularly Bass, Zack, Leon and Bayman), she calls them scum.
@Camel with 2 thumbs Honestly he's the Bruce Lee of the series. It would get loud and annoying. (And his kiais in 2 were fine, though 3 onwards was meh and don't get me started with 5).