[2][3][4] She made her first appearance as an angel in the 2002 film Mini Moni ja Movie: Okashi na Daibōken!

[6] In 2003, Sugaya starred in the movie Hotaru no Hoshi (蛍の星), as Hikari, a fragile elementary school student who, with the help of her caring teacher, has a chance to be momentarily reunited with her deceased mother and overcome her emotional problems.

Since joining the group, she has also participated in the band's weekly radio show Berryz Kobo Kiritsu!

Additionally, Sugaya has done a commercial for the Nihon Shokuniku Shōhi Sōgō Center in October 2003.

"[8] In August 2006, Sugaya was interviewed by MC Maki Goto in the 12th installment of the online only show Hello!

Sugaya herself admitted, in an interview with Sanspo.com, to initially having doubts regarding the photoshoot, but claims to have had a pleasant experience and hopes her fans enjoy the various facets of her personality.

Further, Sugaya announced she would be taking a break from show business following the cessation of group activities.

In October 2017, Sugaya announced her marriage to a man whose identity is undisclosed, and they met through a mutual friend.