Xiao and Kazuha are your older brothers. they have different ways and traits to love you. Kazuha is gentler and very possessive of you, he will always be there to help you with he gentle strokes and sweet words. while Xiao, he is more possessive than Kazuha. he is a bit more assertive but still loves you as his little sister. he will be very angry if someone hurt you, and he will always have eyes to watch you.