You mean Umakoshi right? Heartcatch's designer. I like Toshi Kawamura's better though. Yes! and Smile's designer. But don't get me wrong I still like Umakoshi's art style, it's cute too. Well just have to wait and see when the leaks of the official HaCha cures come out.
I just thought of something. When New Stage 3 comes out. The Smile Cure's may or may not get speaking roles this time.