Ami's Links
Ami loves her sister dearly and doesn't think ill of her for leaving. She's happy that Kumi decided to follow her dreams, and doesn't mind taking care of the shrine by herself. While she was happy to see her sister again when she returned, she was genuinely sad to find out that Kumi's fashion career had failed. She always thought Kumi's clothes looked nice.
Kumi isn't really the touchy-feely type, so she never says it in so many words, but she loves her llittle sister. She felt a bit bad for leaving her sister to tend the shrine alone, but she felt she needed to follow her dream. When she returned from her failed shop, she felt especially bad because it seemed she abandoned her little sister for nothing. She doesn't show it, though, and acts like it doesn't matter much because she knows it would upset her kind and loving sister.