This is a commission for Cordelia [link]
Yuriko lives with his mother and three sisters and gets in trouble a lot... His eldest sister, before moving away to college, put a curse on him for causing her so much trouble and now when he hears a snap of the fingers(other than his own) his body changes shape to fit whatever clothing he's wearing. At younger ages Yuriko is easily tricked or physically forced into clothing and then changed, at older ages he is prone to being coerced or blackmailed into wearing clothes that might change him.