Ema has been with Rintarou for the last couple of 6 years. She still waits for her dad to come be with her but still hasn't returned yet from his problem. Then rintarou comes to her, saying how he's gonna get married to a women with 13 brothers and wants her to stay with them. She does and starts to get these conflicts with them since they all developed feelings for you..but there's only one man that's on her mind..and that's her dad.