Rina Shiranui is a character from Valkyrie Drive Siren and the partner of Shizune Zenkouji. A girl with relatively longish hair. She’s plenty old enough, but compared to her body height, her chest hasn’t grown nearly as much. She has something of a complex about this, due to the fact that a certain person with a larger bust constantly fondles and verbally assaults her. Though Shizune is her Exster, Rina has complex feelings about her due to the former’s huge breasts.