Rena has short orange hair with long sides, her bangs parted at the left side. Her eyes are blue and slightly droops at the end.

Her uniform consists in a normal sailor fuku with a yellow tie, along with white socks and brown scholar shoes.

Her usual outfit out of school is a white dress with purple ribbons on her neck and on her back, along with her favorite white cap. She wears high black socks and brown boots.