Dang. So she’s like the antithesis of everyone combined…
In a way Chiharu is a weird combination of all of them yet the opposite of all of them. Like Minato she likes listening to Mei and is happy talking to her. Interesting enough both of them see two different career choices for Mei that involves listening (Chiharu seeing Mei as a teacher and Minato seeing Mei as a stage performer). Like Karin she wants to kiss (taste) Mei, but unlike Karin she couldn't bring herself to go through with it. Like Maria she can see through Mei's feelings for her, but unlike Maria she wasn't able to capitalize in this fact. Like Riri she enjoys touching Mei, but unlike how touching brings Riri and Mei closer it's the lack of touch that drove Chiharu and Mei apart. Smell is a bit tricky so I'm not sure how she connects with Kaoru on that aspect.
Chiharu gave up seeing, hearing, tasting, touching, and smelling Mei all because of 1 moment. It does make you wonder if Mei found out about Chiharu's feelings would she confess and leave the others.