melting_snow, I think Koichi doesn't like writing lyrics for his songs because he thinks it's too personal - I believe one of the old magazine articles/interviews that Sandra translated some time ago mentioned it.
duotiger, I agree with you that the posse of female dancers in Koichi's PV is getting to be annoying, but for a different reason: I want to see variety in his song lyrics, not just ero songs

Ero lyrics per se doesn't bother me that much, but quite a few of his "recent" songs scream "sex" - and I think that's kinda cheap.
I think if he's serious about being a musician, he should be willing to explore different themes.