Sunan was born in Indonesia and raised in Hamamatsu in Shizuoka Prefecture. She graduated from the University of Niigata with a B.A. in History and from the Gakushuin University with an M.A. in German Linguistics. Upon graduation, she worked at her university and as a XA staff member. Currently, she has started a doctoral program at Gakushuin while continuing as a XA staff member.
Favorite foods: soboro rice, chicken rice with egg, schnitzel, tarekatsu (soy sauce with katsudon)
Hobbies: calligraphy, watching movies, worship
Favorite colors: pastel colors, white
Favorite animal: dog
Favorite verse: Mark 11:24 "Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours."