Seina is a slender female with long light purple hair styled into a ponytail. Her eyes are sharp and purple. She seems to be average height of 158 cm/5'1 ft she will wear the Safety Committee and Student Council Uniform she is older sister of Hiroshima/Yoshie Yamakawa Seina is very heroic, sweet, cheerful and is sometimes doesn't care at all she is boke (meaning shes dumb ditzy and inquisitive her sister is like that also)  shes very bitchy and bossy shes protectivce and school portal