The day I was officially hired by Mango Jam was also Shijirou's birthday~!
Initially, I pictured Kate to have black hair, but violet suits her well too. Then it gave me an idea that she could be Eri-hime's sister because they look alike~ Kate is younger because she is a newer creation than Eri.
I love how the corner designs are actually swirls of their hair. I should try this design more often...