|Japanese Voice:||Hitomi Nabatame|
|English Voice:||Clarine Harp|
Sena has long, waist length purple hair and purple eyes. She is usually seen in her school uniform which consists of a plaid skirt and tie beige blazer with a white long sleeve button shirt underneath. On the rare instances when she is not seen in her uniform, she wears a white summer dress. She is usually seen with her large Di-Sword. One episode involve her removing her shoe and sock, revelating the sole of her foot to get a confession from takumi when he first encoutered her in shibuya.