Name: Crystal
Age:18
Gender:female
Sexuality: bi
Occupation: demon slayer
Sword color:A white/blue color like snow and ice
Breathing technique:Ice breathing

Back story: She is Luke's little sister,they decided to join the demon slayer corp after their family was killed by a demon,who was believed to be part of the twelve Kizuki,they decided to split up to find a master who would train them for final selection and then meet up there,Luke joined the ranks of the Hashira a few years later and Ice is only a few more ranks from doing so as well,but, ever since the tragic day, Luke has not smiled since then,others have tried,but no luck, the only one to do so so far has been Rengoku