I always thought Yaguchi was one of the better singers. Not one of the
very best, but definitely up there. And she's a competent dancer as well. Tbh, I've always thought she was super underrated. This obviously wasn't her greatest performance, but her first line in Love Machine was almost perfect. She's way too breathy, and that can cause her to have intonation problems at times, but at least she doesn't usually push or strain or have a shaky, weak tone production without depth or is constantly off-key when singing harmony or is always singing with a flat tongue and no mask resonance... just
some of the many problems that most H!P singers have.
But I didn't think that anybody sounded that great here, even Aichan. Actually, she sounded surprisingly bad for her. That high note in Love Machine was SO tight, ow. But it seems silly to complain about her singing considering how some of the others sounded, lol.